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Finding the Third Proportional to 1,815 and 3,228

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Solution

The third proportional to 1,815 and 3,228 is: 5,741.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815 : 3,228 = 3,228 : x
  2. Step 2: Convert to fraction form
    1,815/3,228 = 3,228/x
  3. Step 3: Cross multiply
    1,815x = 3,228 × 3,228
  4. Step 4: Simplify right side
    1,815x = 10,419,984
  5. Step 5: Solve for x
    x = 10,419,984/1,815
  6. Step 6: Final answer
    x = 5,741.04

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.