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Finding the Fourth Proportional to 6,304.20, 8,695.92 and 3,915

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Solution

The fourth proportional to 6,304.20, 8,695.92 and 3,915 is: 5,400.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,304.20 : 8,695.92 = 3,915 : x
  2. Step 2: Convert to fraction form
    6,304.20/8,695.92 = 3,915/x
  3. Step 3: Cross multiply
    6,304.20x = 8,695.92 × 3,915
  4. Step 4: Simplify right side
    6,304.20x = 34,044,526.80
  5. Step 5: Solve for x
    x = 34,044,526.80/6,304.20
  6. Step 6: Final answer
    x = 5,400.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.