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Finding the Fourth Proportional to 5,691.15, 7,855.29 and 5,100.66

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Solution

The fourth proportional to 5,691.15, 7,855.29 and 5,100.66 is: 7,040.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,691.15 : 7,855.29 = 5,100.66 : x
  2. Step 2: Convert to fraction form
    5,691.15/7,855.29 = 5,100.66/x
  3. Step 3: Cross multiply
    5,691.15x = 7,855.29 × 5,100.66
  4. Step 4: Simplify right side
    5,691.15x = 40,067,163.49
  5. Step 5: Solve for x
    x = 40,067,163.49/5,691.15
  6. Step 6: Final answer
    x = 7,040.26

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1.5x scale

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.