Home / 9,987.38-14,981-2,591.86

Finding the Fourth Proportional to 9,987.38, 14,981 and 2,591.86

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Solution

The fourth proportional to 9,987.38, 14,981 and 2,591.86 is: 3,887.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.38 : 14,981 = 2,591.86 : x
  2. Step 2: Convert to fraction form
    9,987.38/14,981 = 2,591.86/x
  3. Step 3: Cross multiply
    9,987.38x = 14,981 × 2,591.86
  4. Step 4: Simplify right side
    9,987.38x = 38,828,654.66
  5. Step 5: Solve for x
    x = 38,828,654.66/9,987.38
  6. Step 6: Final answer
    x = 3,887.77

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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.