Final answer:
To get 3/4 cup of sugar using a 1/4 cup measuring cup, you need to fill it three times.
Step-by-step explanation:
To determine how many times you need to fill a 1/4 cup measuring cup to get 3/4 cup of sugar, you can set up a proportion. Since 3/4 is three times as much as 1/4, you will need to fill the measuring cup three times. So, you need to fill the 1/4 cup measuring cup three times.