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Finding the Fourth Proportional to 5,080.52, 7,620.80 and 1,791.82

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Solution

The fourth proportional to 5,080.52, 7,620.80 and 1,791.82 is: 2,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,080.52 : 7,620.80 = 1,791.82 : x
  2. Step 2: Convert to fraction form
    5,080.52/7,620.80 = 1,791.82/x
  3. Step 3: Cross multiply
    5,080.52x = 7,620.80 × 1,791.82
  4. Step 4: Simplify right side
    5,080.52x = 13,655,101.86
  5. Step 5: Solve for x
    x = 13,655,101.86/5,080.52
  6. Step 6: Final answer
    x = 2,687.74

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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.