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Finding the Fourth Proportional to 8,687.85, 13,049.19 and 5,184.69

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Solution

The fourth proportional to 8,687.85, 13,049.19 and 5,184.69 is: 7,787.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.85 : 13,049.19 = 5,184.69 : x
  2. Step 2: Convert to fraction form
    8,687.85/13,049.19 = 5,184.69/x
  3. Step 3: Cross multiply
    8,687.85x = 13,049.19 × 5,184.69
  4. Step 4: Simplify right side
    8,687.85x = 67,656,004.90
  5. Step 5: Solve for x
    x = 67,656,004.90/8,687.85
  6. Step 6: Final answer
    x = 7,787.43

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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.