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Finding the Fourth Proportional to 5,939.28, 8,908.92 and 3,861

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Solution

The fourth proportional to 5,939.28, 8,908.92 and 3,861 is: 5,791.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,939.28 : 8,908.92 = 3,861 : x
  2. Step 2: Convert to fraction form
    5,939.28/8,908.92 = 3,861/x
  3. Step 3: Cross multiply
    5,939.28x = 8,908.92 × 3,861
  4. Step 4: Simplify right side
    5,939.28x = 34,397,340.12
  5. Step 5: Solve for x
    x = 34,397,340.12/5,939.28
  6. Step 6: Final answer
    x = 5,791.50

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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.