proportion solving equations

Question

for a recipe if you had 3 1/2 cups of flour and 3/4 cups of sugar....how much sugar would you need if you used 6 cups of flour?

Answer 1

s represents the amount of sugar

 

3.5 : 0.75 :: 6 : s     proportion

3.5s = (0.75)(6)      product or means/extremes

 

Can you solve for s and answer