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Finding the Third Proportional to 2,855 and 4,384

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Solution

The third proportional to 2,855 and 4,384 is: 6,731.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855 : 4,384 = 4,384 : x
  2. Step 2: Convert to fraction form
    2,855/4,384 = 4,384/x
  3. Step 3: Cross multiply
    2,855x = 4,384 × 4,384
  4. Step 4: Simplify right side
    2,855x = 19,219,456
  5. Step 5: Solve for x
    x = 19,219,456/2,855
  6. Step 6: Final answer
    x = 6,731.86

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.