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Finding the Fourth Proportional to 8,479.52, 12,721.58 and 4,096.97

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Solution

The fourth proportional to 8,479.52, 12,721.58 and 4,096.97 is: 6,146.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.52 : 12,721.58 = 4,096.97 : x
  2. Step 2: Convert to fraction form
    8,479.52/12,721.58 = 4,096.97/x
  3. Step 3: Cross multiply
    8,479.52x = 12,721.58 × 4,096.97
  4. Step 4: Simplify right side
    8,479.52x = 52,119,847.52
  5. Step 5: Solve for x
    x = 52,119,847.52/8,479.52
  6. Step 6: Final answer
    x = 6,146.56

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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.