Home / 8,291.38-12,432.78-3,359.68

Finding the Fourth Proportional to 8,291.38, 12,432.78 and 3,359.68

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Solution

The fourth proportional to 8,291.38, 12,432.78 and 3,359.68 is: 5,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,291.38 : 12,432.78 = 3,359.68 : x
  2. Step 2: Convert to fraction form
    8,291.38/12,432.78 = 3,359.68/x
  3. Step 3: Cross multiply
    8,291.38x = 12,432.78 × 3,359.68
  4. Step 4: Simplify right side
    8,291.38x = 41,770,162.31
  5. Step 5: Solve for x
    x = 41,770,162.31/8,291.38
  6. Step 6: Final answer
    x = 5,037.78

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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.