Home / 8,249.16-12,374.26-3,318.78

Finding the Fourth Proportional to 8,249.16, 12,374.26 and 3,318.78

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Solution

The fourth proportional to 8,249.16, 12,374.26 and 3,318.78 is: 4,978.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,249.16 : 12,374.26 = 3,318.78 : x
  2. Step 2: Convert to fraction form
    8,249.16/12,374.26 = 3,318.78/x
  3. Step 3: Cross multiply
    8,249.16x = 12,374.26 × 3,318.78
  4. Step 4: Simplify right side
    8,249.16x = 41,067,446.60
  5. Step 5: Solve for x
    x = 41,067,446.60/8,249.16
  6. Step 6: Final answer
    x = 4,978.38

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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.