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Finding the Third Proportional to 3,320 and 8,136

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Solution

The third proportional to 3,320 and 8,136 is: 19,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320 : 8,136 = 8,136 : x
  2. Step 2: Convert to fraction form
    3,320/8,136 = 8,136/x
  3. Step 3: Cross multiply
    3,320x = 8,136 × 8,136
  4. Step 4: Simplify right side
    3,320x = 66,194,496
  5. Step 5: Solve for x
    x = 66,194,496/3,320
  6. Step 6: Final answer
    x = 19,938.10

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Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.