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Finding the Third Proportional to 3,155 and 3,443

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Solution

The third proportional to 3,155 and 3,443 is: 3,757.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155 : 3,443 = 3,443 : x
  2. Step 2: Convert to fraction form
    3,155/3,443 = 3,443/x
  3. Step 3: Cross multiply
    3,155x = 3,443 × 3,443
  4. Step 4: Simplify right side
    3,155x = 11,854,249
  5. Step 5: Solve for x
    x = 11,854,249/3,155
  6. Step 6: Final answer
    x = 3,757.29

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.