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Finding the Fourth Proportional to 3,249.88, 4,479.78 and 3,074.92

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Solution

The fourth proportional to 3,249.88, 4,479.78 and 3,074.92 is: 4,238.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,249.88 : 4,479.78 = 3,074.92 : x
  2. Step 2: Convert to fraction form
    3,249.88/4,479.78 = 3,074.92/x
  3. Step 3: Cross multiply
    3,249.88x = 4,479.78 × 3,074.92
  4. Step 4: Simplify right side
    3,249.88x = 13,774,965.12
  5. Step 5: Solve for x
    x = 13,774,965.12/3,249.88
  6. Step 6: Final answer
    x = 4,238.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.