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Finding the Fourth Proportional to 2,022.20, 3,033.42 and 789.20

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Solution

The fourth proportional to 2,022.20, 3,033.42 and 789.20 is: 1,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,022.20 : 3,033.42 = 789.20 : x
  2. Step 2: Convert to fraction form
    2,022.20/3,033.42 = 789.20/x
  3. Step 3: Cross multiply
    2,022.20x = 3,033.42 × 789.20
  4. Step 4: Simplify right side
    2,022.20x = 2,393,975.06
  5. Step 5: Solve for x
    x = 2,393,975.06/2,022.20
  6. Step 6: Final answer
    x = 1,183.85

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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.