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Finding the Fourth Proportional to 8,689.11, 13,034.43 and 2,449.17

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Solution

The fourth proportional to 8,689.11, 13,034.43 and 2,449.17 is: 3,673.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.11 : 13,034.43 = 2,449.17 : x
  2. Step 2: Convert to fraction form
    8,689.11/13,034.43 = 2,449.17/x
  3. Step 3: Cross multiply
    8,689.11x = 13,034.43 × 2,449.17
  4. Step 4: Simplify right side
    8,689.11x = 31,923,534.92
  5. Step 5: Solve for x
    x = 31,923,534.92/8,689.11
  6. Step 6: Final answer
    x = 3,673.97

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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.