Home / 3,965.20-5,940.60-3,230.80

Finding the Fourth Proportional to 3,965.20, 5,940.60 and 3,230.80

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Solution

The fourth proportional to 3,965.20, 5,940.60 and 3,230.80 is: 4,840.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.20 : 5,940.60 = 3,230.80 : x
  2. Step 2: Convert to fraction form
    3,965.20/5,940.60 = 3,230.80/x
  3. Step 3: Cross multiply
    3,965.20x = 5,940.60 × 3,230.80
  4. Step 4: Simplify right side
    3,965.20x = 19,192,890.48
  5. Step 5: Solve for x
    x = 19,192,890.48/3,965.20
  6. Step 6: Final answer
    x = 4,840.33

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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.