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Finding the Fourth Proportional to 3,581.62, 5,372.39 and 2,119.97

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Solution

The fourth proportional to 3,581.62, 5,372.39 and 2,119.97 is: 3,179.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.62 : 5,372.39 = 2,119.97 : x
  2. Step 2: Convert to fraction form
    3,581.62/5,372.39 = 2,119.97/x
  3. Step 3: Cross multiply
    3,581.62x = 5,372.39 × 2,119.97
  4. Step 4: Simplify right side
    3,581.62x = 11,389,324.36
  5. Step 5: Solve for x
    x = 11,389,324.36/3,581.62
  6. Step 6: Final answer
    x = 3,179.94

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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.