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Finding the Fourth Proportional to 8,347.76, 12,520.04 and 5,381.54

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Solution

The fourth proportional to 8,347.76, 12,520.04 and 5,381.54 is: 8,071.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.76 : 12,520.04 = 5,381.54 : x
  2. Step 2: Convert to fraction form
    8,347.76/12,520.04 = 5,381.54/x
  3. Step 3: Cross multiply
    8,347.76x = 12,520.04 × 5,381.54
  4. Step 4: Simplify right side
    8,347.76x = 67,377,098.91
  5. Step 5: Solve for x
    x = 67,377,098.91/8,347.76
  6. Step 6: Final answer
    x = 8,071.28

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1.5x scale

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.