Home / 1,891.78-2,611.94-1,183.91

Finding the Fourth Proportional to 1,891.78, 2,611.94 and 1,183.91

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Solution

The fourth proportional to 1,891.78, 2,611.94 and 1,183.91 is: 1,634.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.78 : 2,611.94 = 1,183.91 : x
  2. Step 2: Convert to fraction form
    1,891.78/2,611.94 = 1,183.91/x
  3. Step 3: Cross multiply
    1,891.78x = 2,611.94 × 1,183.91
  4. Step 4: Simplify right side
    1,891.78x = 3,092,296.08
  5. Step 5: Solve for x
    x = 3,092,296.08/1,891.78
  6. Step 6: Final answer
    x = 1,634.60

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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.