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Finding the Third Proportional to 1,208 and 2,608

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Solution

The third proportional to 1,208 and 2,608 is: 5,630.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208 : 2,608 = 2,608 : x
  2. Step 2: Convert to fraction form
    1,208/2,608 = 2,608/x
  3. Step 3: Cross multiply
    1,208x = 2,608 × 2,608
  4. Step 4: Simplify right side
    1,208x = 6,801,664
  5. Step 5: Solve for x
    x = 6,801,664/1,208
  6. Step 6: Final answer
    x = 5,630.52

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.