Home / 5,105.43-7,046.19-2,981.61

Finding the Fourth Proportional to 5,105.43, 7,046.19 and 2,981.61

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Solution

The fourth proportional to 5,105.43, 7,046.19 and 2,981.61 is: 4,115.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.43 : 7,046.19 = 2,981.61 : x
  2. Step 2: Convert to fraction form
    5,105.43/7,046.19 = 2,981.61/x
  3. Step 3: Cross multiply
    5,105.43x = 7,046.19 × 2,981.61
  4. Step 4: Simplify right side
    5,105.43x = 21,008,990.57
  5. Step 5: Solve for x
    x = 21,008,990.57/5,105.43
  6. Step 6: Final answer
    x = 4,115.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.