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Finding the Fourth Proportional to 2,581.95, 3,872.49 and 732.63

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Solution

The fourth proportional to 2,581.95, 3,872.49 and 732.63 is: 1,098.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.95 : 3,872.49 = 732.63 : x
  2. Step 2: Convert to fraction form
    2,581.95/3,872.49 = 732.63/x
  3. Step 3: Cross multiply
    2,581.95x = 3,872.49 × 732.63
  4. Step 4: Simplify right side
    2,581.95x = 2,837,102.35
  5. Step 5: Solve for x
    x = 2,837,102.35/2,581.95
  6. Step 6: Final answer
    x = 1,098.82

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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.