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Finding the Fourth Proportional to 8,404.74, 11,600.52 and 4,869.90

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Solution

The fourth proportional to 8,404.74, 11,600.52 and 4,869.90 is: 6,721.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,404.74 : 11,600.52 = 4,869.90 : x
  2. Step 2: Convert to fraction form
    8,404.74/11,600.52 = 4,869.90/x
  3. Step 3: Cross multiply
    8,404.74x = 11,600.52 × 4,869.90
  4. Step 4: Simplify right side
    8,404.74x = 56,493,372.35
  5. Step 5: Solve for x
    x = 56,493,372.35/8,404.74
  6. Step 6: Final answer
    x = 6,721.61

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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.