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Finding the Fourth Proportional to 7,249.91, 10,876.22 and 3,961.20

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Solution

The fourth proportional to 7,249.91, 10,876.22 and 3,961.20 is: 5,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,249.91 : 10,876.22 = 3,961.20 : x
  2. Step 2: Convert to fraction form
    7,249.91/10,876.22 = 3,961.20/x
  3. Step 3: Cross multiply
    7,249.91x = 10,876.22 × 3,961.20
  4. Step 4: Simplify right side
    7,249.91x = 43,082,940.78
  5. Step 5: Solve for x
    x = 43,082,940.78/7,249.91
  6. Step 6: Final answer
    x = 5,942.55

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1.5x scale

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.