To find your answer you need to use the cross product method :
24 rolls → 4 cups of flour
36 rolls → x cups of flour
⇢ (4 • 36) ÷ 24 = x
⇢ 144 ÷ 24 = x
⇢ 6 = x
⇨ So your answer is: You need 6 cups of flour to make 36 rolls!
There you go! I really hope this helped, if there’s anything just let me know! ☻