Home / 3,993.20-5,989.58-1,219.65

Finding the Fourth Proportional to 3,993.20, 5,989.58 and 1,219.65

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Solution

The fourth proportional to 3,993.20, 5,989.58 and 1,219.65 is: 1,829.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.20 : 5,989.58 = 1,219.65 : x
  2. Step 2: Convert to fraction form
    3,993.20/5,989.58 = 1,219.65/x
  3. Step 3: Cross multiply
    3,993.20x = 5,989.58 × 1,219.65
  4. Step 4: Simplify right side
    3,993.20x = 7,305,191.25
  5. Step 5: Solve for x
    x = 7,305,191.25/3,993.20
  6. Step 6: Final answer
    x = 1,829.41

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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.