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Finding the Fourth Proportional to 6,891.38, 9,512.24 and 5,125.38

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Solution

The fourth proportional to 6,891.38, 9,512.24 and 5,125.38 is: 7,074.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.38 : 9,512.24 = 5,125.38 : x
  2. Step 2: Convert to fraction form
    6,891.38/9,512.24 = 5,125.38/x
  3. Step 3: Cross multiply
    6,891.38x = 9,512.24 × 5,125.38
  4. Step 4: Simplify right side
    6,891.38x = 48,753,783.35
  5. Step 5: Solve for x
    x = 48,753,783.35/6,891.38
  6. Step 6: Final answer
    x = 7,074.61

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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.