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Finding the Third Proportional to 5,380 and 8,666

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Solution

The third proportional to 5,380 and 8,666 is: 13,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380 : 8,666 = 8,666 : x
  2. Step 2: Convert to fraction form
    5,380/8,666 = 8,666/x
  3. Step 3: Cross multiply
    5,380x = 8,666 × 8,666
  4. Step 4: Simplify right side
    5,380x = 75,099,556
  5. Step 5: Solve for x
    x = 75,099,556/5,380
  6. Step 6: Final answer
    x = 13,959.03

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.