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Finding the Third Proportional to 7,194 and 7,815

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Solution

The third proportional to 7,194 and 7,815 is: 8,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,194 : 7,815 = 7,815 : x
  2. Step 2: Convert to fraction form
    7,194/7,815 = 7,815/x
  3. Step 3: Cross multiply
    7,194x = 7,815 × 7,815
  4. Step 4: Simplify right side
    7,194x = 61,074,225
  5. Step 5: Solve for x
    x = 61,074,225/7,194
  6. Step 6: Final answer
    x = 8,489.61

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.