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Finding the Fourth Proportional to 3,581.32, 5,372.21 and 1,241.55

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Solution

The fourth proportional to 3,581.32, 5,372.21 and 1,241.55 is: 1,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.32 : 5,372.21 = 1,241.55 : x
  2. Step 2: Convert to fraction form
    3,581.32/5,372.21 = 1,241.55/x
  3. Step 3: Cross multiply
    3,581.32x = 5,372.21 × 1,241.55
  4. Step 4: Simplify right side
    3,581.32x = 6,669,867.33
  5. Step 5: Solve for x
    x = 6,669,867.33/3,581.32
  6. Step 6: Final answer
    x = 1,862.40

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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.