Home / 1,914.28-2,865.94-1,425.85

Finding the Fourth Proportional to 1,914.28, 2,865.94 and 1,425.85

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Solution

The fourth proportional to 1,914.28, 2,865.94 and 1,425.85 is: 2,134.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.28 : 2,865.94 = 1,425.85 : x
  2. Step 2: Convert to fraction form
    1,914.28/2,865.94 = 1,425.85/x
  3. Step 3: Cross multiply
    1,914.28x = 2,865.94 × 1,425.85
  4. Step 4: Simplify right side
    1,914.28x = 4,086,400.55
  5. Step 5: Solve for x
    x = 4,086,400.55/1,914.28
  6. Step 6: Final answer
    x = 2,134.69

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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.