Question

Find the 4th proportional to 2a,3b and 4c

Answer 1

Step-by-step explanation:

• a/b=c/d
• therefore d=bc/a
• let d be x
• 2a/3b=4c/x
• 2a*x=4c*3b
• x=12bc/2a
• x=6bc/a

………….. therefore d in terms of a b and c is equal to 6bc/a

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