Home / 3,391.32-4,679.82-1,993.80

Finding the Fourth Proportional to 3,391.32, 4,679.82 and 1,993.80

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Solution

The fourth proportional to 3,391.32, 4,679.82 and 1,993.80 is: 2,751.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.32 : 4,679.82 = 1,993.80 : x
  2. Step 2: Convert to fraction form
    3,391.32/4,679.82 = 1,993.80/x
  3. Step 3: Cross multiply
    3,391.32x = 4,679.82 × 1,993.80
  4. Step 4: Simplify right side
    3,391.32x = 9,330,625.12
  5. Step 5: Solve for x
    x = 9,330,625.12/3,391.32
  6. Step 6: Final answer
    x = 2,751.33

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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.