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Finding the Third Proportional to 7,742 and 16,930

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Solution

The third proportional to 7,742 and 16,930 is: 37,022.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742 : 16,930 = 16,930 : x
  2. Step 2: Convert to fraction form
    7,742/16,930 = 16,930/x
  3. Step 3: Cross multiply
    7,742x = 16,930 × 16,930
  4. Step 4: Simplify right side
    7,742x = 286,624,900
  5. Step 5: Solve for x
    x = 286,624,900/7,742
  6. Step 6: Final answer
    x = 37,022.07

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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.