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Finding the Third Proportional to 3,910.78 and 4,791.66

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Solution

The third proportional to 3,910.78 and 4,791.66 is: 5,870.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.78 : 4,791.66 = 4,791.66 : x
  2. Step 2: Convert to fraction form
    3,910.78/4,791.66 = 4,791.66/x
  3. Step 3: Cross multiply
    3,910.78x = 4,791.66 × 4,791.66
  4. Step 4: Simplify right side
    3,910.78x = 22,959,969.62
  5. Step 5: Solve for x
    x = 22,959,969.62/3,910.78
  6. Step 6: Final answer
    x = 5,870.94

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Why These Related Problems?

These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.