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Finding the Fourth Proportional to 2,067.32, 3,101.19 and 768.49

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Solution

The fourth proportional to 2,067.32, 3,101.19 and 768.49 is: 1,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,067.32 : 3,101.19 = 768.49 : x
  2. Step 2: Convert to fraction form
    2,067.32/3,101.19 = 768.49/x
  3. Step 3: Cross multiply
    2,067.32x = 3,101.19 × 768.49
  4. Step 4: Simplify right side
    2,067.32x = 2,383,222.87
  5. Step 5: Solve for x
    x = 2,383,222.87/2,067.32
  6. Step 6: Final answer
    x = 1,152.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.