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Finding the Third Proportional to 7,678 and 16,822

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Solution

The third proportional to 7,678 and 16,822 is: 36,855.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678 : 16,822 = 16,822 : x
  2. Step 2: Convert to fraction form
    7,678/16,822 = 16,822/x
  3. Step 3: Cross multiply
    7,678x = 16,822 × 16,822
  4. Step 4: Simplify right side
    7,678x = 282,979,684
  5. Step 5: Solve for x
    x = 282,979,684/7,678
  6. Step 6: Final answer
    x = 36,855.91

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.