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Finding the Third Proportional to 2,685 and 5,539

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Solution

The third proportional to 2,685 and 5,539 is: 11,426.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685 : 5,539 = 5,539 : x
  2. Step 2: Convert to fraction form
    2,685/5,539 = 5,539/x
  3. Step 3: Cross multiply
    2,685x = 5,539 × 5,539
  4. Step 4: Simplify right side
    2,685x = 30,680,521
  5. Step 5: Solve for x
    x = 30,680,521/2,685
  6. Step 6: Final answer
    x = 11,426.64

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.