Home / 8,131.25-12,196.88-2,287.86

Finding the Fourth Proportional to 8,131.25, 12,196.88 and 2,287.86

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Solution

The fourth proportional to 8,131.25, 12,196.88 and 2,287.86 is: 3,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.25 : 12,196.88 = 2,287.86 : x
  2. Step 2: Convert to fraction form
    8,131.25/12,196.88 = 2,287.86/x
  3. Step 3: Cross multiply
    8,131.25x = 12,196.88 × 2,287.86
  4. Step 4: Simplify right side
    8,131.25x = 27,904,753.88
  5. Step 5: Solve for x
    x = 27,904,753.88/8,131.25
  6. Step 6: Final answer
    x = 3,431.79

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Similar ratio
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1.5x scale

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.