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Finding the Third Proportional to 2,981 and 7,394

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Solution

The third proportional to 2,981 and 7,394 is: 18,339.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981 : 7,394 = 7,394 : x
  2. Step 2: Convert to fraction form
    2,981/7,394 = 7,394/x
  3. Step 3: Cross multiply
    2,981x = 7,394 × 7,394
  4. Step 4: Simplify right side
    2,981x = 54,671,236
  5. Step 5: Solve for x
    x = 54,671,236/2,981
  6. Step 6: Final answer
    x = 18,339.90

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Why These Related Problems?

These problems maintain the same ratio (2.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.