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Finding the Fourth Proportional to 8,074.92, 11,129.22 and 7,850.28

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Solution

The fourth proportional to 8,074.92, 11,129.22 and 7,850.28 is: 10,819.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,074.92 : 11,129.22 = 7,850.28 : x
  2. Step 2: Convert to fraction form
    8,074.92/11,129.22 = 7,850.28/x
  3. Step 3: Cross multiply
    8,074.92x = 11,129.22 × 7,850.28
  4. Step 4: Simplify right side
    8,074.92x = 87,367,493.18
  5. Step 5: Solve for x
    x = 87,367,493.18/8,074.92
  6. Step 6: Final answer
    x = 10,819.61

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Similar ratio
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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.