Sandra drew a scale drawing of a neighborhood park. She used the scale 5 inches : 3 yards. The actual width of a soccer field in the park is 72 yards. How wide is the field in the drawing?

Answer 1

This can be set up and solved using a proportion.

Let x = field size on the map

5 inches on the map/3 yards in the park = x in/72 yards in the park

This can be solved by cross multiplication

5(72)=3(x)

Simplify

360=3x

Divide both sides by 3

360/3=3x/3

120=x

The field would be drawn at 120 inches on the map