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Finding the Third Proportional to 1,962.56 and 4,122.56

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Solution

The third proportional to 1,962.56 and 4,122.56 is: 8,659.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.56 : 4,122.56 = 4,122.56 : x
  2. Step 2: Convert to fraction form
    1,962.56/4,122.56 = 4,122.56/x
  3. Step 3: Cross multiply
    1,962.56x = 4,122.56 × 4,122.56
  4. Step 4: Simplify right side
    1,962.56x = 16,995,521.57
  5. Step 5: Solve for x
    x = 16,995,521.57/1,962.56
  6. Step 6: Final answer
    x = 8,659.86

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.