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Finding the Third Proportional to 6,978 and 7,554

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Solution

The third proportional to 6,978 and 7,554 is: 8,177.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,978 : 7,554 = 7,554 : x
  2. Step 2: Convert to fraction form
    6,978/7,554 = 7,554/x
  3. Step 3: Cross multiply
    6,978x = 7,554 × 7,554
  4. Step 4: Simplify right side
    6,978x = 57,062,916
  5. Step 5: Solve for x
    x = 57,062,916/6,978
  6. Step 6: Final answer
    x = 8,177.55

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These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.