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Finding the Third Proportional to 6,842 and 7,274

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Solution

The third proportional to 6,842 and 7,274 is: 7,733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,842 : 7,274 = 7,274 : x
  2. Step 2: Convert to fraction form
    6,842/7,274 = 7,274/x
  3. Step 3: Cross multiply
    6,842x = 7,274 × 7,274
  4. Step 4: Simplify right side
    6,842x = 52,911,076
  5. Step 5: Solve for x
    x = 52,911,076/6,842
  6. Step 6: Final answer
    x = 7,733.28

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Why These Related Problems?

These problems maintain the same ratio (1.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.