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Finding the Third Proportional to 2,856 and 5,469

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Solution

The third proportional to 2,856 and 5,469 is: 10,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856 : 5,469 = 5,469 : x
  2. Step 2: Convert to fraction form
    2,856/5,469 = 5,469/x
  3. Step 3: Cross multiply
    2,856x = 5,469 × 5,469
  4. Step 4: Simplify right side
    2,856x = 29,909,961
  5. Step 5: Solve for x
    x = 29,909,961/2,856
  6. Step 6: Final answer
    x = 10,472.68

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.