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Finding the Third Proportional to 1,940 and 2,828

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Solution

The third proportional to 1,940 and 2,828 is: 4,122.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940 : 2,828 = 2,828 : x
  2. Step 2: Convert to fraction form
    1,940/2,828 = 2,828/x
  3. Step 3: Cross multiply
    1,940x = 2,828 × 2,828
  4. Step 4: Simplify right side
    1,940x = 7,997,584
  5. Step 5: Solve for x
    x = 7,997,584/1,940
  6. Step 6: Final answer
    x = 4,122.47

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.