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Finding the Fourth Proportional to 2,728.52, 3,765 and 1,732.04

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Solution

The fourth proportional to 2,728.52, 3,765 and 1,732.04 is: 2,389.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.52 : 3,765 = 1,732.04 : x
  2. Step 2: Convert to fraction form
    2,728.52/3,765 = 1,732.04/x
  3. Step 3: Cross multiply
    2,728.52x = 3,765 × 1,732.04
  4. Step 4: Simplify right side
    2,728.52x = 6,521,130.60
  5. Step 5: Solve for x
    x = 6,521,130.60/2,728.52
  6. Step 6: Final answer
    x = 2,389.99

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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.