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Finding the Third Proportional to 5,200 and 8,266

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Solution

The third proportional to 5,200 and 8,266 is: 13,139.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,200 : 8,266 = 8,266 : x
  2. Step 2: Convert to fraction form
    5,200/8,266 = 8,266/x
  3. Step 3: Cross multiply
    5,200x = 8,266 × 8,266
  4. Step 4: Simplify right side
    5,200x = 68,326,756
  5. Step 5: Solve for x
    x = 68,326,756/5,200
  6. Step 6: Final answer
    x = 13,139.76

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.