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Finding the Third Proportional to 2,911 and 3,877

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Solution

The third proportional to 2,911 and 3,877 is: 5,163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911 : 3,877 = 3,877 : x
  2. Step 2: Convert to fraction form
    2,911/3,877 = 3,877/x
  3. Step 3: Cross multiply
    2,911x = 3,877 × 3,877
  4. Step 4: Simplify right side
    2,911x = 15,031,129
  5. Step 5: Solve for x
    x = 15,031,129/2,911
  6. Step 6: Final answer
    x = 5,163.56

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.