Solve an Proportion

Do the ratios form a proportion?

• Yes, they form a proportion.

• No, they do not form a proportion.

Do the ratios form a proportion?

• Yes, they form a proportion.

• No, they do not form a proportion.

• 1
• 3

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 2.5 cups milk

• 1.75 cups milk

• 2 cups flour

• 2.25 cups milk

Given the proportion

2:30=4:5d

Solve for d.

• d = 6

• d = 8

• d = 10

• d = 12

Solve for x:

3:4 = 9:x

• x = 3

• x = 6

• x = 9

• x = 12

It is an equation that shows two ratio are equal.

• Similarities

• Ratio

• Proportion

• Congruence

Solve for x:

• x = 4

• x = 6

• x = 12

• x = 18

Solve for x

• x = 0

• x = 3

• x = 4

• x = 6