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Finding the Third Proportional to 2,431.69 and 3,878.44

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Solution

The third proportional to 2,431.69 and 3,878.44 is: 6,185.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.69 : 3,878.44 = 3,878.44 : x
  2. Step 2: Convert to fraction form
    2,431.69/3,878.44 = 3,878.44/x
  3. Step 3: Cross multiply
    2,431.69x = 3,878.44 × 3,878.44
  4. Step 4: Simplify right side
    2,431.69x = 15,042,277.44
  5. Step 5: Solve for x
    x = 15,042,277.44/2,431.69
  6. Step 6: Final answer
    x = 6,185.94

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.