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Finding the Third Proportional to 3,211 and 4,928.75

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Solution

The third proportional to 3,211 and 4,928.75 is: 7,565.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211 : 4,928.75 = 4,928.75 : x
  2. Step 2: Convert to fraction form
    3,211/4,928.75 = 4,928.75/x
  3. Step 3: Cross multiply
    3,211x = 4,928.75 × 4,928.75
  4. Step 4: Simplify right side
    3,211x = 24,292,576.56
  5. Step 5: Solve for x
    x = 24,292,576.56/3,211
  6. Step 6: Final answer
    x = 7,565.42

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.