Missing Proportion

If I need 5 cups of flour to make 2 pizza dough recipes, how many recipes of pizza dough can I make with 13 cups? Set up and solve a proportion for this situation.

• ~ 2.8

• ~ 10

• ~ 11

• ~ 5.2

Set-up the proportion: 3 pipes takes 60 minutes to water the field. How much time will it take to water the field with 6 pipes?

• a

• b

• c

• d

Set up a proportion: How many pounds of Havarti cheese can Kaci buy for $10, knowing that 3 pounds costs $7.50.

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How can you solve for missing information in proportional relationships?

• Giant One method

• Multiply both proportions across

• Divide each proportion

Solve the missing proportion.
8 : 19 = 14 : n

• 5.89

• 10.86

• 33.25

• 13.89

Solve the missing proportion.
4 : n = 6 : 9

• 6

• 4

• 3

• 9

Coco is packing kettle corn into bags for snacks. She knows that she packs 6.4 ounces into 4 bags. She creates the following table to find other values for the number of ounces packed to the number of bags used in the same proportion.
Using the first row, Coco ​ (a)   to find the missing value for the second row. If she uses the first row to find the value in the third row, Coco will ​ (b)   .

• divides by 4

• multiply by 2.25

• subtracts by 4

• multiplies by 4

• subtracts 2.25

• divide 2.25

1 : 4 = 4 : x then x is --------

• 1

• 16

• 4

• 1 /16

3 : 5 = a : 10 then a is -------

• 50/3

• 6

• 3

• 3/2

33 is 75% of what number?

Mathematical Equivalence

ON