Home / 2,855.97-4,286.39-1,125.81

Finding the Fourth Proportional to 2,855.97, 4,286.39 and 1,125.81

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Solution

The fourth proportional to 2,855.97, 4,286.39 and 1,125.81 is: 1,689.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.97 : 4,286.39 = 1,125.81 : x
  2. Step 2: Convert to fraction form
    2,855.97/4,286.39 = 1,125.81/x
  3. Step 3: Cross multiply
    2,855.97x = 4,286.39 × 1,125.81
  4. Step 4: Simplify right side
    2,855.97x = 4,825,655.10
  5. Step 5: Solve for x
    x = 4,825,655.10/2,855.97
  6. Step 6: Final answer
    x = 1,689.67

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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.