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Finding the Third Proportional to 2,731 and 3,655

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Solution

The third proportional to 2,731 and 3,655 is: 4,891.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,731 : 3,655 = 3,655 : x
  2. Step 2: Convert to fraction form
    2,731/3,655 = 3,655/x
  3. Step 3: Cross multiply
    2,731x = 3,655 × 3,655
  4. Step 4: Simplify right side
    2,731x = 13,359,025
  5. Step 5: Solve for x
    x = 13,359,025/2,731
  6. Step 6: Final answer
    x = 4,891.62

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.