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Finding the Third Proportional to 2,691 and 3,849.75

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Solution

The third proportional to 2,691 and 3,849.75 is: 5,507.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691 : 3,849.75 = 3,849.75 : x
  2. Step 2: Convert to fraction form
    2,691/3,849.75 = 3,849.75/x
  3. Step 3: Cross multiply
    2,691x = 3,849.75 × 3,849.75
  4. Step 4: Simplify right side
    2,691x = 14,820,575.06
  5. Step 5: Solve for x
    x = 14,820,575.06/2,691
  6. Step 6: Final answer
    x = 5,507.46

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.