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Finding the Third Proportional to 1,217 and 2,242

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Solution

The third proportional to 1,217 and 2,242 is: 4,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217 : 2,242 = 2,242 : x
  2. Step 2: Convert to fraction form
    1,217/2,242 = 2,242/x
  3. Step 3: Cross multiply
    1,217x = 2,242 × 2,242
  4. Step 4: Simplify right side
    1,217x = 5,026,564
  5. Step 5: Solve for x
    x = 5,026,564/1,217
  6. Step 6: Final answer
    x = 4,130.29

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.