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Finding the Third Proportional to 1,644 and 3,360

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Solution

The third proportional to 1,644 and 3,360 is: 6,867.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644 : 3,360 = 3,360 : x
  2. Step 2: Convert to fraction form
    1,644/3,360 = 3,360/x
  3. Step 3: Cross multiply
    1,644x = 3,360 × 3,360
  4. Step 4: Simplify right side
    1,644x = 11,289,600
  5. Step 5: Solve for x
    x = 11,289,600/1,644
  6. Step 6: Final answer
    x = 6,867.15

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.