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Finding the Third Proportional to 3,530 and 7,756

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Solution

The third proportional to 3,530 and 7,756 is: 17,041.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530 : 7,756 = 7,756 : x
  2. Step 2: Convert to fraction form
    3,530/7,756 = 7,756/x
  3. Step 3: Cross multiply
    3,530x = 7,756 × 7,756
  4. Step 4: Simplify right side
    3,530x = 60,155,536
  5. Step 5: Solve for x
    x = 60,155,536/3,530
  6. Step 6: Final answer
    x = 17,041.23

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.