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Finding the Fourth Proportional to 8,581.47, 12,863.43 and 5,808.42

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Solution

The fourth proportional to 8,581.47, 12,863.43 and 5,808.42 is: 8,706.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.47 : 12,863.43 = 5,808.42 : x
  2. Step 2: Convert to fraction form
    8,581.47/12,863.43 = 5,808.42/x
  3. Step 3: Cross multiply
    8,581.47x = 12,863.43 × 5,808.42
  4. Step 4: Simplify right side
    8,581.47x = 74,716,204.08
  5. Step 5: Solve for x
    x = 74,716,204.08/8,581.47
  6. Step 6: Final answer
    x = 8,706.69

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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.