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Finding the Fourth Proportional to 8,105.52, 12,163.75 and 3,174.54

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Solution

The fourth proportional to 8,105.52, 12,163.75 and 3,174.54 is: 4,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.52 : 12,163.75 = 3,174.54 : x
  2. Step 2: Convert to fraction form
    8,105.52/12,163.75 = 3,174.54/x
  3. Step 3: Cross multiply
    8,105.52x = 12,163.75 × 3,174.54
  4. Step 4: Simplify right side
    8,105.52x = 38,614,310.93
  5. Step 5: Solve for x
    x = 38,614,310.93/8,105.52
  6. Step 6: Final answer
    x = 4,763.95

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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.