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Finding the Third Proportional to 7,894 and 12,278

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Solution

The third proportional to 7,894 and 12,278 is: 19,096.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894 : 12,278 = 12,278 : x
  2. Step 2: Convert to fraction form
    7,894/12,278 = 12,278/x
  3. Step 3: Cross multiply
    7,894x = 12,278 × 12,278
  4. Step 4: Simplify right side
    7,894x = 150,749,284
  5. Step 5: Solve for x
    x = 150,749,284/7,894
  6. Step 6: Final answer
    x = 19,096.69

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.