Home / 3,320.80-4,581.68-1,993.84

Finding the Fourth Proportional to 3,320.80, 4,581.68 and 1,993.84

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Solution

The fourth proportional to 3,320.80, 4,581.68 and 1,993.84 is: 2,750.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.80 : 4,581.68 = 1,993.84 : x
  2. Step 2: Convert to fraction form
    3,320.80/4,581.68 = 1,993.84/x
  3. Step 3: Cross multiply
    3,320.80x = 4,581.68 × 1,993.84
  4. Step 4: Simplify right side
    3,320.80x = 9,135,136.85
  5. Step 5: Solve for x
    x = 9,135,136.85/3,320.80
  6. Step 6: Final answer
    x = 2,750.88

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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.