Home / 11,861.28-17,791.92-4,935.78

Finding the Fourth Proportional to 11,861.28, 17,791.92 and 4,935.78

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Solution

The fourth proportional to 11,861.28, 17,791.92 and 4,935.78 is: 7,403.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.28 : 17,791.92 = 4,935.78 : x
  2. Step 2: Convert to fraction form
    11,861.28/17,791.92 = 4,935.78/x
  3. Step 3: Cross multiply
    11,861.28x = 17,791.92 × 4,935.78
  4. Step 4: Simplify right side
    11,861.28x = 87,817,002.90
  5. Step 5: Solve for x
    x = 87,817,002.90/11,861.28
  6. Step 6: Final answer
    x = 7,403.67

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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.