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Finding the Third Proportional to 7,265 and 8,705

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Solution

The third proportional to 7,265 and 8,705 is: 10,430.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,265 : 8,705 = 8,705 : x
  2. Step 2: Convert to fraction form
    7,265/8,705 = 8,705/x
  3. Step 3: Cross multiply
    7,265x = 8,705 × 8,705
  4. Step 4: Simplify right side
    7,265x = 75,777,025
  5. Step 5: Solve for x
    x = 75,777,025/7,265
  6. Step 6: Final answer
    x = 10,430.42

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.