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Finding the Fourth Proportional to 6,397.92, 9,607.30 and 3,948.31

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Solution

The fourth proportional to 6,397.92, 9,607.30 and 3,948.31 is: 5,928.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,397.92 : 9,607.30 = 3,948.31 : x
  2. Step 2: Convert to fraction form
    6,397.92/9,607.30 = 3,948.31/x
  3. Step 3: Cross multiply
    6,397.92x = 9,607.30 × 3,948.31
  4. Step 4: Simplify right side
    6,397.92x = 37,932,600.80
  5. Step 5: Solve for x
    x = 37,932,600.80/6,397.92
  6. Step 6: Final answer
    x = 5,928.90

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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.