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Finding the Third Proportional to 2,138 and 2,732

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Solution

The third proportional to 2,138 and 2,732 is: 3,491.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138 : 2,732 = 2,732 : x
  2. Step 2: Convert to fraction form
    2,138/2,732 = 2,732/x
  3. Step 3: Cross multiply
    2,138x = 2,732 × 2,732
  4. Step 4: Simplify right side
    2,138x = 7,463,824
  5. Step 5: Solve for x
    x = 7,463,824/2,138
  6. Step 6: Final answer
    x = 3,491.03

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.