Understanding Proportions

What is the first step in determining if two ratios are proportional?

• Multiply the means and extremes

• Divide the means by the extremes

• Subtract the means from the extremes

• Add the means and extremes

In the example where 2:4 and 1:8 are compared, what is the product of the means?

• 6

• 8

• 10

• 12

If the product of the means is 12 and the product of the extremes is 40, are the ratios proportional?

• Yes, they are proportional

• No, they are not proportional

• It depends on the context

• Cannot be determined

When using cross multiplication, what is the product of the extremes for the ratios 3:4 and 6:8?

• 18

• 36

• 30

• 24

What method can be used to determine if ratios in fraction form are proportional?

• Division

• Cross multiplication

• Subtraction

• Addition

In the practice problem, what is the product of the means for the ratios 4:5 and 16:20?

• 70

• 90

• 60

• 80

For the ratios 1:5 and 2:6, what is the product of the extremes?

• 10

• 6

• 5

• 12

In the example of 2:6 and 1:3, what is the product of the means?

• 5

• 6

• 3

• 4

What is the product of the extremes for the ratios 1:8 and 4:10?

• 8

• 32

• 10

• 40

What should you do if the product of the means and extremes are not equal?

• Ignore the results

• Consider the ratios proportional

• Consider the ratios not proportional

• Recalculate the products