Miguel needs 3 gallons of milk to make 24 milkshakes.

First, estimate how much milk he needs to make 36 milkshakes by filling in the blank below. Then, finish the sentence to justify your choice.

I think Miguel will need ______________to make 36 milkshakes because...

I think Miguel will need 4.5 gallons to make 36 milkshakes because he needs 3 gallons to make 24 milkshakes, which means he needs 1.5 gallons for every 12 milkshakes. Therefore, for 36 milkshakes, he would need 3 x 1.5 = 4.5 gallons.