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Finding the Third Proportional to 1,788 and 3,378

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Solution

The third proportional to 1,788 and 3,378 is: 6,381.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788 : 3,378 = 3,378 : x
  2. Step 2: Convert to fraction form
    1,788/3,378 = 3,378/x
  3. Step 3: Cross multiply
    1,788x = 3,378 × 3,378
  4. Step 4: Simplify right side
    1,788x = 11,410,884
  5. Step 5: Solve for x
    x = 11,410,884/1,788
  6. Step 6: Final answer
    x = 6,381.93

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.