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Finding the Third Proportional to 3,928 and 7,196

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Solution

The third proportional to 3,928 and 7,196 is: 13,182.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928 : 7,196 = 7,196 : x
  2. Step 2: Convert to fraction form
    3,928/7,196 = 7,196/x
  3. Step 3: Cross multiply
    3,928x = 7,196 × 7,196
  4. Step 4: Simplify right side
    3,928x = 51,782,416
  5. Step 5: Solve for x
    x = 51,782,416/3,928
  6. Step 6: Final answer
    x = 13,182.90

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Why These Related Problems?

These problems maintain the same ratio (1.83) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.