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Finding the Fourth Proportional to 2,728.53, 3,765.41 and 1,549.61

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Solution

The fourth proportional to 2,728.53, 3,765.41 and 1,549.61 is: 2,138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.53 : 3,765.41 = 1,549.61 : x
  2. Step 2: Convert to fraction form
    2,728.53/3,765.41 = 1,549.61/x
  3. Step 3: Cross multiply
    2,728.53x = 3,765.41 × 1,549.61
  4. Step 4: Simplify right side
    2,728.53x = 5,834,916.99
  5. Step 5: Solve for x
    x = 5,834,916.99/2,728.53
  6. Step 6: Final answer
    x = 2,138.48

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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.