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Finding the Fourth Proportional to 3,253.58, 4,879.47 and 1,378.84

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Solution

The fourth proportional to 3,253.58, 4,879.47 and 1,378.84 is: 2,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,253.58 : 4,879.47 = 1,378.84 : x
  2. Step 2: Convert to fraction form
    3,253.58/4,879.47 = 1,378.84/x
  3. Step 3: Cross multiply
    3,253.58x = 4,879.47 × 1,378.84
  4. Step 4: Simplify right side
    3,253.58x = 6,728,010.54
  5. Step 5: Solve for x
    x = 6,728,010.54/3,253.58
  6. Step 6: Final answer
    x = 2,067.88

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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.