Home / 1,982.75-2,736.18-1,143.38

Finding the Fourth Proportional to 1,982.75, 2,736.18 and 1,143.38

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Solution

The fourth proportional to 1,982.75, 2,736.18 and 1,143.38 is: 1,577.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.75 : 2,736.18 = 1,143.38 : x
  2. Step 2: Convert to fraction form
    1,982.75/2,736.18 = 1,143.38/x
  3. Step 3: Cross multiply
    1,982.75x = 2,736.18 × 1,143.38
  4. Step 4: Simplify right side
    1,982.75x = 3,128,500.33
  5. Step 5: Solve for x
    x = 3,128,500.33/1,982.75
  6. Step 6: Final answer
    x = 1,577.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.