1. • Solve problems involving scale drawings.
• scale drawing
• scale model
• scale
• scale factor

2. Use a Map Scale
MAPS What is the actual distance between
Daytona Beach and Orlando?
Step 1 Use an inch ruler to find the map distance
between the two cities. The map distance
is about or 1.75 inches.

3. Use a Map Scale
Step 2 Write and solve a proportion using the
scale. Let d represent the actual
distance between the cities.
0.5 • d = 17.3 • 1.75 Cross products
0.5d = 30.275 Multiply.
Divide each side by 0.5.

4. Use a Map Scale
d = 60.55 Simplify.
Answer: The actual distance between Daytona
Beach and Orlando is about 61 miles.

5. MAPS The distance on a map has a scale of
0.5 inch = 14 miles. The measured distance
between West Palm Beach and Ft. Lauderdale on
the map is 1.5 inches. What is the actual distance
between these two cities?
A. 21 miles
B. 28 miles
C. 42 miles
D. 56 miles

6. Use a Scale Model
MURALS An artist is painting a large mural of
flowers on the side of a school. If she uses the
scale 4 inches = 1 inch, how large will the mural
painting of a rose bloom be if it is inches
high?

7. Use a Scale Model
4 • 6.25 = 1 • h Cross products
25 = h Multiply.
Answer: The mural painting of the rose bloom will
be 25 inches high.

8. FURNITURE A full-size model is being created from
a child-size rocking chair which has a height of 15
inches. If the scale to be used is
4 inches = 1 inch, what is the height of the model?
A. 40 in.
B. 55 in.
C. 60 in.
D. 80 in.

9. Find a Scale Factor
Find the scale factor of a blueprint if the scale is
inch = 3 feet.
Convert 3 feet to inches.
Divide out common units.
Rewrite the division sentence
as a multiplication sentence.
Simplify.

10. Find a Scale Factor
Answer: The scale factor is .

11. Find the scale factor of a blueprint if the scale is
inch = 5 feet.
A.
B.
C.
D.

12. Construct a Scale
Model
BUILDINGS An architect is making a model of an
apartment building that is 150 feet tall. Find the
scale if the model of the apartment building is
3 inches tall. Using this scale, find the height of the
model of a house nearby if the actual height is
25 feet.
Divide the numerator and
denominator by 3 so the
numerator equals 1.

13. Construct a Scale
Model
The scale is 1 inch = 50 feet. Using this scale, find
the height of a model of a nearby house.
1 • 25 = 50 • x
Find the cross
products.
25 = 50x
Multiply.
=x Divide by 50.

14. Construct a Scale
Model
Answer: The scale is 1 inch = 50 feet. The height
of the model of the nearby house is
inch.

15. PARKS Steve is making a model replica of a park
near his house. One of the trees in his model is 3
inches tall and represents a tree that is actually
15 feet tall. Find the scale of the model and then
using this scale, find the actual height of another
tree in his model that is 2 inches tall.
A. 1 inch = 12 feet; 24 feet
B. 1 inch = 5 feet; 13 feet
C. 1 inch = 5 feet; 10 feet
D. 1 inch = 3 feet; 6 feet