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Finding the Fourth Proportional to 3,939.92, 5,902.91 and 3,510.91

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Solution

The fourth proportional to 3,939.92, 5,902.91 and 3,510.91 is: 5,260.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.92 : 5,902.91 = 3,510.91 : x
  2. Step 2: Convert to fraction form
    3,939.92/5,902.91 = 3,510.91/x
  3. Step 3: Cross multiply
    3,939.92x = 5,902.91 × 3,510.91
  4. Step 4: Simplify right side
    3,939.92x = 20,724,585.75
  5. Step 5: Solve for x
    x = 20,724,585.75/3,939.92
  6. Step 6: Final answer
    x = 5,260.15

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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.