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Finding the Third Proportional to 839 and 1,826

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Solution

The third proportional to 839 and 1,826 is: 3,974.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    839 : 1,826 = 1,826 : x
  2. Step 2: Convert to fraction form
    839/1,826 = 1,826/x
  3. Step 3: Cross multiply
    839x = 1,826 × 1,826
  4. Step 4: Simplify right side
    839x = 3,334,276
  5. Step 5: Solve for x
    x = 3,334,276/839
  6. Step 6: Final answer
    x = 3,974.11

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.