Home / 2,747.24-4,120.14-991.88

Finding the Fourth Proportional to 2,747.24, 4,120.14 and 991.88

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Solution

The fourth proportional to 2,747.24, 4,120.14 and 991.88 is: 1,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.24 : 4,120.14 = 991.88 : x
  2. Step 2: Convert to fraction form
    2,747.24/4,120.14 = 991.88/x
  3. Step 3: Cross multiply
    2,747.24x = 4,120.14 × 991.88
  4. Step 4: Simplify right side
    2,747.24x = 4,086,684.46
  5. Step 5: Solve for x
    x = 4,086,684.46/2,747.24
  6. Step 6: Final answer
    x = 1,487.56

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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.