Home / 6,747.20-10,115.79-3,187.55

Finding the Fourth Proportional to 6,747.20, 10,115.79 and 3,187.55

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Solution

The fourth proportional to 6,747.20, 10,115.79 and 3,187.55 is: 4,778.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,747.20 : 10,115.79 = 3,187.55 : x
  2. Step 2: Convert to fraction form
    6,747.20/10,115.79 = 3,187.55/x
  3. Step 3: Cross multiply
    6,747.20x = 10,115.79 × 3,187.55
  4. Step 4: Simplify right side
    6,747.20x = 32,244,599.75
  5. Step 5: Solve for x
    x = 32,244,599.75/6,747.20
  6. Step 6: Final answer
    x = 4,778.96

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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.