Home / 5,891.20-8,129.88-3,238.78

Finding the Fourth Proportional to 5,891.20, 8,129.88 and 3,238.78

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Solution

The fourth proportional to 5,891.20, 8,129.88 and 3,238.78 is: 4,469.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,891.20 : 8,129.88 = 3,238.78 : x
  2. Step 2: Convert to fraction form
    5,891.20/8,129.88 = 3,238.78/x
  3. Step 3: Cross multiply
    5,891.20x = 8,129.88 × 3,238.78
  4. Step 4: Simplify right side
    5,891.20x = 26,330,839.95
  5. Step 5: Solve for x
    x = 26,330,839.95/5,891.20
  6. Step 6: Final answer
    x = 4,469.52

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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.