Home / 1,519.11-2,286.92-1,089.27

Finding the Fourth Proportional to 1,519.11, 2,286.92 and 1,089.27

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Solution

The fourth proportional to 1,519.11, 2,286.92 and 1,089.27 is: 1,639.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.11 : 2,286.92 = 1,089.27 : x
  2. Step 2: Convert to fraction form
    1,519.11/2,286.92 = 1,089.27/x
  3. Step 3: Cross multiply
    1,519.11x = 2,286.92 × 1,089.27
  4. Step 4: Simplify right side
    1,519.11x = 2,491,076.07
  5. Step 5: Solve for x
    x = 2,491,076.07/1,519.11
  6. Step 6: Final answer
    x = 1,639.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.