Home / 2,618.94-3,928.16-1,231.96

Finding the Fourth Proportional to 2,618.94, 3,928.16 and 1,231.96

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Solution

The fourth proportional to 2,618.94, 3,928.16 and 1,231.96 is: 1,847.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.94 : 3,928.16 = 1,231.96 : x
  2. Step 2: Convert to fraction form
    2,618.94/3,928.16 = 1,231.96/x
  3. Step 3: Cross multiply
    2,618.94x = 3,928.16 × 1,231.96
  4. Step 4: Simplify right side
    2,618.94x = 4,839,335.99
  5. Step 5: Solve for x
    x = 4,839,335.99/2,618.94
  6. Step 6: Final answer
    x = 1,847.82

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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.