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Finding the Fourth Proportional to 3,993.49, 5,503.84 and 3,249.91

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Solution

The fourth proportional to 3,993.49, 5,503.84 and 3,249.91 is: 4,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.49 : 5,503.84 = 3,249.91 : x
  2. Step 2: Convert to fraction form
    3,993.49/5,503.84 = 3,249.91/x
  3. Step 3: Cross multiply
    3,993.49x = 5,503.84 × 3,249.91
  4. Step 4: Simplify right side
    3,993.49x = 17,886,984.65
  5. Step 5: Solve for x
    x = 17,886,984.65/3,993.49
  6. Step 6: Final answer
    x = 4,479.04

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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.