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Finding the Third Proportional to 2,936 and 7,960

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Solution

The third proportional to 2,936 and 7,960 is: 21,580.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,936 : 7,960 = 7,960 : x
  2. Step 2: Convert to fraction form
    2,936/7,960 = 7,960/x
  3. Step 3: Cross multiply
    2,936x = 7,960 × 7,960
  4. Step 4: Simplify right side
    2,936x = 63,361,600
  5. Step 5: Solve for x
    x = 63,361,600/2,936
  6. Step 6: Final answer
    x = 21,580.93

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Why These Related Problems?

These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.