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Finding the Fourth Proportional to 8,479.61, 12,714.80 and 2,932.49

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Solution

The fourth proportional to 8,479.61, 12,714.80 and 2,932.49 is: 4,397.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.61 : 12,714.80 = 2,932.49 : x
  2. Step 2: Convert to fraction form
    8,479.61/12,714.80 = 2,932.49/x
  3. Step 3: Cross multiply
    8,479.61x = 12,714.80 × 2,932.49
  4. Step 4: Simplify right side
    8,479.61x = 37,286,023.85
  5. Step 5: Solve for x
    x = 37,286,023.85/8,479.61
  6. Step 6: Final answer
    x = 4,397.14

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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.