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Finding the Fourth Proportional to 2,077.88, 3,115.92 and 616.52

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Solution

The fourth proportional to 2,077.88, 3,115.92 and 616.52 is: 924.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.88 : 3,115.92 = 616.52 : x
  2. Step 2: Convert to fraction form
    2,077.88/3,115.92 = 616.52/x
  3. Step 3: Cross multiply
    2,077.88x = 3,115.92 × 616.52
  4. Step 4: Simplify right side
    2,077.88x = 1,921,027.00
  5. Step 5: Solve for x
    x = 1,921,027.00/2,077.88
  6. Step 6: Final answer
    x = 924.51

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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.