Home / 8,838.60-12,190.92-5,691.78

Finding the Fourth Proportional to 8,838.60, 12,190.92 and 5,691.78

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Solution

The fourth proportional to 8,838.60, 12,190.92 and 5,691.78 is: 7,850.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,838.60 : 12,190.92 = 5,691.78 : x
  2. Step 2: Convert to fraction form
    8,838.60/12,190.92 = 5,691.78/x
  3. Step 3: Cross multiply
    8,838.60x = 12,190.92 × 5,691.78
  4. Step 4: Simplify right side
    8,838.60x = 69,388,034.64
  5. Step 5: Solve for x
    x = 69,388,034.64/8,838.60
  6. Step 6: Final answer
    x = 7,850.57

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1.5x scale

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.