Scale Factors and Proportions

Scale is 1cm = 8km. Hatboro and Smithville are 24cm apart on the map, what is the actual distance between the 2 cities?

• 87 km

• 216 km 

• 33 km

• 192 km

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

The scale drawing of a giraffe has a scale in which 2 inches represents 15 feet. How tall is the actual giraffe?

• 14.25 ft

• 18.75 ft

• 18.65 ft

• 16.50

• 200 ft

• 12.5 ft

• 100 ft

• 50 ft

• 24 in

• 96 in

• 72 in

• 62 in

48

120

2.5

15

• 48

• 120

• 2.5

• 15

A scale drawing of a billboard uses the scale 4 cm:9 ft. The length of the billboard in the drawing is 11 cm. How long is the actual billboard?

• 13 ft

• 20.75 ft

• 24.75 ft

• 22 ft

Fairview and Rockville are 104 miles from each other. How far apart would the cities be on a map that has a scale of 1 cm : 13 miles? Choose the correct proportion.

Fairview and Rockville are 104 miles from each other. How far apart would the cities be on a map that has a scale of 1 cm : 13 miles? Solve the proportion.

• 7 cm

• 1352 cm

• 8 cm

• 4 cm

The art class is planning to paint a mural on an outside wall. This figure is a scale drawing of the wall. If the height of the scale drawing is 11 inches, what is the height of the actual drawing?

• 7.5 ft

• 13.5 ft

• 14.75 ft

• 16.5 ft