Final answer:
Approximately 1.778 pounds of grapes are needed to make one jar of jelly.
Step-by-step explanation:
In order to find how many pounds of grapes are needed to make one jar of jelly, we can set up a proportion.
Given: 2 x (2/3) pounds of grape makes (3/4) of a jar of jelly.
We need to find: How many pounds of grape makes one jar of jelly?
Let x represent the unknown weight of grapes needed to make one jar of jelly.
Setting up the proportion: 2 x (2/3) = x x (3/4)
Simplifying the equation: (4/3) = (3/4)
By cross multiplying, we get: 16 = 9x
Dividing by 9, we find that x = 16/9
Therefore, approximately 1.778 pounds of grapes are needed to make one jar of jelly.