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Finding the Third Proportional to 5,211 and 7,451.25

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Solution

The third proportional to 5,211 and 7,451.25 is: 10,654.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211 : 7,451.25 = 7,451.25 : x
  2. Step 2: Convert to fraction form
    5,211/7,451.25 = 7,451.25/x
  3. Step 3: Cross multiply
    5,211x = 7,451.25 × 7,451.25
  4. Step 4: Simplify right side
    5,211x = 55,521,126.56
  5. Step 5: Solve for x
    x = 55,521,126.56/5,211
  6. Step 6: Final answer
    x = 10,654.60

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.