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Finding the Fourth Proportional to 8,590.11, 12,863.29 and 5,659.53

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Solution

The fourth proportional to 8,590.11, 12,863.29 and 5,659.53 is: 8,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.11 : 12,863.29 = 5,659.53 : x
  2. Step 2: Convert to fraction form
    8,590.11/12,863.29 = 5,659.53/x
  3. Step 3: Cross multiply
    8,590.11x = 12,863.29 × 5,659.53
  4. Step 4: Simplify right side
    8,590.11x = 72,800,161.50
  5. Step 5: Solve for x
    x = 72,800,161.50/8,590.11
  6. Step 6: Final answer
    x = 8,474.88

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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.