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Finding the Fourth Proportional to 2,691.09, 3,715.22 and 1,747.73

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Solution

The fourth proportional to 2,691.09, 3,715.22 and 1,747.73 is: 2,412.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.09 : 3,715.22 = 1,747.73 : x
  2. Step 2: Convert to fraction form
    2,691.09/3,715.22 = 1,747.73/x
  3. Step 3: Cross multiply
    2,691.09x = 3,715.22 × 1,747.73
  4. Step 4: Simplify right side
    2,691.09x = 6,493,201.45
  5. Step 5: Solve for x
    x = 6,493,201.45/2,691.09
  6. Step 6: Final answer
    x = 2,412.85

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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.