Home / 2,721.22-4,082.39-942.43

Finding the Fourth Proportional to 2,721.22, 4,082.39 and 942.43

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Solution

The fourth proportional to 2,721.22, 4,082.39 and 942.43 is: 1,413.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.22 : 4,082.39 = 942.43 : x
  2. Step 2: Convert to fraction form
    2,721.22/4,082.39 = 942.43/x
  3. Step 3: Cross multiply
    2,721.22x = 4,082.39 × 942.43
  4. Step 4: Simplify right side
    2,721.22x = 3,847,366.81
  5. Step 5: Solve for x
    x = 3,847,366.81/2,721.22
  6. Step 6: Final answer
    x = 1,413.84

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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.