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Finding the Third Proportional to 2,191.78 and 3,082.92

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Solution

The third proportional to 2,191.78 and 3,082.92 is: 4,336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.78 : 3,082.92 = 3,082.92 : x
  2. Step 2: Convert to fraction form
    2,191.78/3,082.92 = 3,082.92/x
  3. Step 3: Cross multiply
    2,191.78x = 3,082.92 × 3,082.92
  4. Step 4: Simplify right side
    2,191.78x = 9,504,407.29
  5. Step 5: Solve for x
    x = 9,504,407.29/2,191.78
  6. Step 6: Final answer
    x = 4,336.38

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.