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Finding the Third Proportional to 1,786.88 and 3,840.38

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Solution

The third proportional to 1,786.88 and 3,840.38 is: 8,253.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.88 : 3,840.38 = 3,840.38 : x
  2. Step 2: Convert to fraction form
    1,786.88/3,840.38 = 3,840.38/x
  3. Step 3: Cross multiply
    1,786.88x = 3,840.38 × 3,840.38
  4. Step 4: Simplify right side
    1,786.88x = 14,748,480.14
  5. Step 5: Solve for x
    x = 14,748,480.14/1,786.88
  6. Step 6: Final answer
    x = 8,253.78

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.