Home / 6,387.40-9,588.30-3,791.80

Finding the Fourth Proportional to 6,387.40, 9,588.30 and 3,791.80

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Solution

The fourth proportional to 6,387.40, 9,588.30 and 3,791.80 is: 5,691.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.40 : 9,588.30 = 3,791.80 : x
  2. Step 2: Convert to fraction form
    6,387.40/9,588.30 = 3,791.80/x
  3. Step 3: Cross multiply
    6,387.40x = 9,588.30 × 3,791.80
  4. Step 4: Simplify right side
    6,387.40x = 36,356,915.94
  5. Step 5: Solve for x
    x = 36,356,915.94/6,387.40
  6. Step 6: Final answer
    x = 5,691.97

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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.