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Finding the Fourth Proportional to 6,616.36, 9,915.71 and 3,495.63

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Solution

The fourth proportional to 6,616.36, 9,915.71 and 3,495.63 is: 5,238.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.36 : 9,915.71 = 3,495.63 : x
  2. Step 2: Convert to fraction form
    6,616.36/9,915.71 = 3,495.63/x
  3. Step 3: Cross multiply
    6,616.36x = 9,915.71 × 3,495.63
  4. Step 4: Simplify right side
    6,616.36x = 34,661,662.09
  5. Step 5: Solve for x
    x = 34,661,662.09/6,616.36
  6. Step 6: Final answer
    x = 5,238.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.