Home / 7,132.32-9,841.50-3,987.90

Finding the Fourth Proportional to 7,132.32, 9,841.50 and 3,987.90

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Solution

The fourth proportional to 7,132.32, 9,841.50 and 3,987.90 is: 5,502.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,132.32 : 9,841.50 = 3,987.90 : x
  2. Step 2: Convert to fraction form
    7,132.32/9,841.50 = 3,987.90/x
  3. Step 3: Cross multiply
    7,132.32x = 9,841.50 × 3,987.90
  4. Step 4: Simplify right side
    7,132.32x = 39,246,917.85
  5. Step 5: Solve for x
    x = 39,246,917.85/7,132.32
  6. Step 6: Final answer
    x = 5,502.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.