Home / 8,067.60-12,102.31-3,909.87

Finding the Fourth Proportional to 8,067.60, 12,102.31 and 3,909.87

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Solution

The fourth proportional to 8,067.60, 12,102.31 and 3,909.87 is: 5,865.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,067.60 : 12,102.31 = 3,909.87 : x
  2. Step 2: Convert to fraction form
    8,067.60/12,102.31 = 3,909.87/x
  3. Step 3: Cross multiply
    8,067.60x = 12,102.31 × 3,909.87
  4. Step 4: Simplify right side
    8,067.60x = 47,318,463.69
  5. Step 5: Solve for x
    x = 47,318,463.69/8,067.60
  6. Step 6: Final answer
    x = 5,865.25

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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.