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Finding the Third Proportional to 5,412 and 6,888

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Solution

The third proportional to 5,412 and 6,888 is: 8,766.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412 : 6,888 = 6,888 : x
  2. Step 2: Convert to fraction form
    5,412/6,888 = 6,888/x
  3. Step 3: Cross multiply
    5,412x = 6,888 × 6,888
  4. Step 4: Simplify right side
    5,412x = 47,444,544
  5. Step 5: Solve for x
    x = 47,444,544/5,412
  6. Step 6: Final answer
    x = 8,766.55

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.