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Finding the Third Proportional to 5,728 and 10,208

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Solution

The third proportional to 5,728 and 10,208 is: 18,191.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,728 : 10,208 = 10,208 : x
  2. Step 2: Convert to fraction form
    5,728/10,208 = 10,208/x
  3. Step 3: Cross multiply
    5,728x = 10,208 × 10,208
  4. Step 4: Simplify right side
    5,728x = 104,203,264
  5. Step 5: Solve for x
    x = 104,203,264/5,728
  6. Step 6: Final answer
    x = 18,191.91

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.