Home / 1,982.87-2,736.39-1,143.43

Finding the Fourth Proportional to 1,982.87, 2,736.39 and 1,143.43

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Solution

The fourth proportional to 1,982.87, 2,736.39 and 1,143.43 is: 1,577.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.87 : 2,736.39 = 1,143.43 : x
  2. Step 2: Convert to fraction form
    1,982.87/2,736.39 = 1,143.43/x
  3. Step 3: Cross multiply
    1,982.87x = 2,736.39 × 1,143.43
  4. Step 4: Simplify right side
    1,982.87x = 3,128,863.58
  5. Step 5: Solve for x
    x = 3,128,863.58/1,982.87
  6. Step 6: Final answer
    x = 1,577.95

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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.