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Finding the Third Proportional to 2,922 and 6,780

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Solution

The third proportional to 2,922 and 6,780 is: 15,731.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,922 : 6,780 = 6,780 : x
  2. Step 2: Convert to fraction form
    2,922/6,780 = 6,780/x
  3. Step 3: Cross multiply
    2,922x = 6,780 × 6,780
  4. Step 4: Simplify right side
    2,922x = 45,968,400
  5. Step 5: Solve for x
    x = 45,968,400/2,922
  6. Step 6: Final answer
    x = 15,731.83

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.