Home / 1,891.65-2,836.49-850.75

Finding the Fourth Proportional to 1,891.65, 2,836.49 and 850.75

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Solution

The fourth proportional to 1,891.65, 2,836.49 and 850.75 is: 1,275.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.65 : 2,836.49 = 850.75 : x
  2. Step 2: Convert to fraction form
    1,891.65/2,836.49 = 850.75/x
  3. Step 3: Cross multiply
    1,891.65x = 2,836.49 × 850.75
  4. Step 4: Simplify right side
    1,891.65x = 2,413,143.87
  5. Step 5: Solve for x
    x = 2,413,143.87/1,891.65
  6. Step 6: Final answer
    x = 1,275.68

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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.