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Finding the Fourth Proportional to 8,654.52, 12,981.78 and 2,080.71

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Solution

The fourth proportional to 8,654.52, 12,981.78 and 2,080.71 is: 3,121.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.52 : 12,981.78 = 2,080.71 : x
  2. Step 2: Convert to fraction form
    8,654.52/12,981.78 = 2,080.71/x
  3. Step 3: Cross multiply
    8,654.52x = 12,981.78 × 2,080.71
  4. Step 4: Simplify right side
    8,654.52x = 27,011,287.01
  5. Step 5: Solve for x
    x = 27,011,287.01/8,654.52
  6. Step 6: Final answer
    x = 3,121.06

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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.