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Finding the Fourth Proportional to 2,169.52, 3,254.70 and 708.28

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Solution

The fourth proportional to 2,169.52, 3,254.70 and 708.28 is: 1,062.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.52 : 3,254.70 = 708.28 : x
  2. Step 2: Convert to fraction form
    2,169.52/3,254.70 = 708.28/x
  3. Step 3: Cross multiply
    2,169.52x = 3,254.70 × 708.28
  4. Step 4: Simplify right side
    2,169.52x = 2,305,238.92
  5. Step 5: Solve for x
    x = 2,305,238.92/2,169.52
  6. Step 6: Final answer
    x = 1,062.56

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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.