Solving Equivalent Proportions

• 1
• 4
• 2.5
• 10

• 1
• 25
• 4
• 100

Two ratios that are equal are

• similar sides

• unit rates

• congruent

• proportional

Do the ratios form a proportion?

• Yes, they form a proportion.

• No, they do not form a proportion.

15 minutes to drive 21 miles; 25 minutes to drive 35 miles

• yes, equivalent

• no

Mrs. Shelly paid $3 for 6 muffins and Mrs. Kloske paid $9 for 18 muffins.  

• yes, equivalent

• no, not equivalent

120 calories in 2 servings; 360 calories in 6 servings

• yes, equivalent

• no

A proportion is the same as

• equivalent fractions

• reciprocals

• percentages

• different variables

Solve the proportion

• x = 3

• x = -3

• x = 1

• x = -1

Solve for b 

• b = 8

• b = 17/12

• b = 4/3

• b = 1/8