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Finding the Fourth Proportional to 8,581.33, 12,843.43 and 6,489.81

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Solution

The fourth proportional to 8,581.33, 12,843.43 and 6,489.81 is: 9,713.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.33 : 12,843.43 = 6,489.81 : x
  2. Step 2: Convert to fraction form
    8,581.33/12,843.43 = 6,489.81/x
  3. Step 3: Cross multiply
    8,581.33x = 12,843.43 × 6,489.81
  4. Step 4: Simplify right side
    8,581.33x = 83,351,404.22
  5. Step 5: Solve for x
    x = 83,351,404.22/8,581.33
  6. Step 6: Final answer
    x = 9,713.11

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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.