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Finding the Third Proportional to 5,551 and 12,278

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Solution

The third proportional to 5,551 and 12,278 is: 27,157.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,551 : 12,278 = 12,278 : x
  2. Step 2: Convert to fraction form
    5,551/12,278 = 12,278/x
  3. Step 3: Cross multiply
    5,551x = 12,278 × 12,278
  4. Step 4: Simplify right side
    5,551x = 150,749,284
  5. Step 5: Solve for x
    x = 150,749,284/5,551
  6. Step 6: Final answer
    x = 27,157.14

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.