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Finding the Third Proportional to 3,838 and 7,622

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Solution

The third proportional to 3,838 and 7,622 is: 15,136.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838 : 7,622 = 7,622 : x
  2. Step 2: Convert to fraction form
    3,838/7,622 = 7,622/x
  3. Step 3: Cross multiply
    3,838x = 7,622 × 7,622
  4. Step 4: Simplify right side
    3,838x = 58,094,884
  5. Step 5: Solve for x
    x = 58,094,884/3,838
  6. Step 6: Final answer
    x = 15,136.76

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Why These Related Problems?

These problems maintain the same ratio (1.99) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.