Proportion (Grade 5)

The two ratios are in _________ if the product of means and extremes are equal.

• Ratio

• Equal

• Proportion

• Not Ratio

4:7 = 24:N

What is the value of N?

• 45

• 43

• 52

• 42

a:b = c:d

What are b and c called?

• median

• means

• minimum

• extremes

42:14 = x:2

What is the value of x?

• 7

• 5

• 8

• 6

The ratio of Sharon's mass to Mary's mass is 3:4. If Sharon's mass is 45 kilogram, how much kilogram on Mary's mass?

3:4 = 45:M

• 75

• 90

• 60

• 30

a:b = c:d

What are a and d called?

• minimum

• extremes

• means

• median

13:22 = 39:44

Are they in proportion?

• Yes

• No

Answer explanation

No, because they are not equal.

13:22 = 39:44 (multiply the means and extremes)

22×39 = 13×44 (find the product)

858 ≠ 572 (they are not equal)

If 6 mini chocolate bars cost ₱30, how much the cost of 8 mini chocolate bars?

6:8 = ₱30:₱?

• ₱45

• ₱40

• ₱55

• ₱60

12:m = 8:4

What is the value of m?

• 8

• 6

• 4

• 7

12:15 = 4:5

Are they in proportion?

• Yes

• No

Answer explanation

12:15 = 4:5 (multiply the means and extremes)

15×4 = 12×5 (find the product)

60 = 60 (they are equal)