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Finding the Third Proportional to 928.25 and 2,191.25

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Solution

The third proportional to 928.25 and 2,191.25 is: 5,172.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.25 : 2,191.25 = 2,191.25 : x
  2. Step 2: Convert to fraction form
    928.25/2,191.25 = 2,191.25/x
  3. Step 3: Cross multiply
    928.25x = 2,191.25 × 2,191.25
  4. Step 4: Simplify right side
    928.25x = 4,801,576.56
  5. Step 5: Solve for x
    x = 4,801,576.56/928.25
  6. Step 6: Final answer
    x = 5,172.72

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.