Home / 2,176.20-3,264.60-789.20

Finding the Fourth Proportional to 2,176.20, 3,264.60 and 789.20

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Solution

The fourth proportional to 2,176.20, 3,264.60 and 789.20 is: 1,183.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.20 : 3,264.60 = 789.20 : x
  2. Step 2: Convert to fraction form
    2,176.20/3,264.60 = 789.20/x
  3. Step 3: Cross multiply
    2,176.20x = 3,264.60 × 789.20
  4. Step 4: Simplify right side
    2,176.20x = 2,576,422.32
  5. Step 5: Solve for x
    x = 2,576,422.32/2,176.20
  6. Step 6: Final answer
    x = 1,183.91

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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.