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Finding the Third Proportional to 5,454 and 6,912

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Solution

The third proportional to 5,454 and 6,912 is: 8,759.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,454 : 6,912 = 6,912 : x
  2. Step 2: Convert to fraction form
    5,454/6,912 = 6,912/x
  3. Step 3: Cross multiply
    5,454x = 6,912 × 6,912
  4. Step 4: Simplify right side
    5,454x = 47,775,744
  5. Step 5: Solve for x
    x = 47,775,744/5,454
  6. Step 6: Final answer
    x = 8,759.76

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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.