Home / 2,087.69-3,132.07-789.17

Finding the Fourth Proportional to 2,087.69, 3,132.07 and 789.17

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Solution

The fourth proportional to 2,087.69, 3,132.07 and 789.17 is: 1,183.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.69 : 3,132.07 = 789.17 : x
  2. Step 2: Convert to fraction form
    2,087.69/3,132.07 = 789.17/x
  3. Step 3: Cross multiply
    2,087.69x = 3,132.07 × 789.17
  4. Step 4: Simplify right side
    2,087.69x = 2,471,735.68
  5. Step 5: Solve for x
    x = 2,471,735.68/2,087.69
  6. Step 6: Final answer
    x = 1,183.96

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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.