Understanding Proportional Relationships

What is the value of x if 2:3 = x:12?

• 4

• 10

• 6

• 8

If 5:8 = 15:x, what is the value of x?

• 24

• 18

• 30

• 20

A recipe calls for 4 cups of flour for 2 cakes. How much flour is needed for 5 cakes?

• 10 cups of flour

• 6 cups of flour

• 12 cups of flour

• 8 cups of flour

If 7:9 = 21:x, find the value of x.

• 27

• 30

• 18

• 24

A car travels 60 miles in 1 hour. How far will it travel in 3 hours at the same speed?

• 90 miles

• 180 miles

• 240 miles

• 120 miles

If 3:5 = x:20, what is the value of x?

• 8

• 12

• 25

• 15

A map has a scale of 1:100,000. If a distance on the map is 3 cm, what is the actual distance?

• 5 km

• 1 km

• 3 km

• 2 km

If 10:15 = x:45, what is the value of x?

• 15

• 60

• 30

• 25

A painter uses 2 liters of paint for 3 walls. How much paint is needed for 9 walls?

• 6 liters

• 4 liters

• 8 liters

• 10 liters

If 4:6 = 12:x, what is the value of x?

• 18

• 10

• 15

• 24