Question

The scale on a map shows that 200 miles is represented by 5 inches on a map. Which proportion can be used to find

the distance on the map. x, that represents 50 miles?
5 х
200
=
50
200
5
х
50
50
5
© 200 x
50 - 200
=
Math

Answer 1

Scale given

• 200mi=5in

Mow

• 50mi=xin

Lets solve

• 200:5=50:x
• 40:1=50:x
• 40=50/x
• x=1.25in

Answer 2

Explanation:

The scale is:

• 200 miles ⇒ 5 inches

We need to find the length of 50 miles represented by x inches on a map.

• 50 mile ⇒ x inches

Based on he above we can set ratio:

• 200/50 = 5/x

This can be rewritten as cross-product:

• 200*x = 5*50

The solution is:

• x = 250/200
• x = 1.25 inches

Any proportion we same outcome for x is correct choice.