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Finding the Fourth Proportional to 8,658.52, 12,988.17 and 2,654.16

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Solution

The fourth proportional to 8,658.52, 12,988.17 and 2,654.16 is: 3,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.52 : 12,988.17 = 2,654.16 : x
  2. Step 2: Convert to fraction form
    8,658.52/12,988.17 = 2,654.16/x
  3. Step 3: Cross multiply
    8,658.52x = 12,988.17 × 2,654.16
  4. Step 4: Simplify right side
    8,658.52x = 34,472,739.95
  5. Step 5: Solve for x
    x = 34,472,739.95/8,658.52
  6. Step 6: Final answer
    x = 3,981.37

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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.