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Finding the Third Proportional to 2,767 and 4,128

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Solution

The third proportional to 2,767 and 4,128 is: 6,158.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767 : 4,128 = 4,128 : x
  2. Step 2: Convert to fraction form
    2,767/4,128 = 4,128/x
  3. Step 3: Cross multiply
    2,767x = 4,128 × 4,128
  4. Step 4: Simplify right side
    2,767x = 17,040,384
  5. Step 5: Solve for x
    x = 17,040,384/2,767
  6. Step 6: Final answer
    x = 6,158.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.