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Finding the Third Proportional to 5,200 and 7,636

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Solution

The third proportional to 5,200 and 7,636 is: 11,213.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,200 : 7,636 = 7,636 : x
  2. Step 2: Convert to fraction form
    5,200/7,636 = 7,636/x
  3. Step 3: Cross multiply
    5,200x = 7,636 × 7,636
  4. Step 4: Simplify right side
    5,200x = 58,308,496
  5. Step 5: Solve for x
    x = 58,308,496/5,200
  6. Step 6: Final answer
    x = 11,213.17

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.