Home / 8,231.40-12,343.50-2,387.88

Finding the Fourth Proportional to 8,231.40, 12,343.50 and 2,387.88

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Solution

The fourth proportional to 8,231.40, 12,343.50 and 2,387.88 is: 3,580.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,231.40 : 12,343.50 = 2,387.88 : x
  2. Step 2: Convert to fraction form
    8,231.40/12,343.50 = 2,387.88/x
  3. Step 3: Cross multiply
    8,231.40x = 12,343.50 × 2,387.88
  4. Step 4: Simplify right side
    8,231.40x = 29,474,796.78
  5. Step 5: Solve for x
    x = 29,474,796.78/8,231.40
  6. Step 6: Final answer
    x = 3,580.78

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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.