Home / 7,861.92-11,789.97-2,313.82

Finding the Fourth Proportional to 7,861.92, 11,789.97 and 2,313.82

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Solution

The fourth proportional to 7,861.92, 11,789.97 and 2,313.82 is: 3,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861.92 : 11,789.97 = 2,313.82 : x
  2. Step 2: Convert to fraction form
    7,861.92/11,789.97 = 2,313.82/x
  3. Step 3: Cross multiply
    7,861.92x = 11,789.97 × 2,313.82
  4. Step 4: Simplify right side
    7,861.92x = 27,279,868.39
  5. Step 5: Solve for x
    x = 27,279,868.39/7,861.92
  6. Step 6: Final answer
    x = 3,469.87

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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.