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Finding the Third Proportional to 5,480 and 11,782

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Solution

The third proportional to 5,480 and 11,782 is: 25,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480 : 11,782 = 11,782 : x
  2. Step 2: Convert to fraction form
    5,480/11,782 = 11,782/x
  3. Step 3: Cross multiply
    5,480x = 11,782 × 11,782
  4. Step 4: Simplify right side
    5,480x = 138,815,524
  5. Step 5: Solve for x
    x = 138,815,524/5,480
  6. Step 6: Final answer
    x = 25,331.30

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.