Home / 2,747.75-4,122.15-1,187.75

Finding the Fourth Proportional to 2,747.75, 4,122.15 and 1,187.75

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Solution

The fourth proportional to 2,747.75, 4,122.15 and 1,187.75 is: 1,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.75 : 4,122.15 = 1,187.75 : x
  2. Step 2: Convert to fraction form
    2,747.75/4,122.15 = 1,187.75/x
  3. Step 3: Cross multiply
    2,747.75x = 4,122.15 × 1,187.75
  4. Step 4: Simplify right side
    2,747.75x = 4,896,083.66
  5. Step 5: Solve for x
    x = 4,896,083.66/2,747.75
  6. Step 6: Final answer
    x = 1,781.85

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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.