Home / 3,811.92-5,718.62-1,214.36

Finding the Fourth Proportional to 3,811.92, 5,718.62 and 1,214.36

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Solution

The fourth proportional to 3,811.92, 5,718.62 and 1,214.36 is: 1,821.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.92 : 5,718.62 = 1,214.36 : x
  2. Step 2: Convert to fraction form
    3,811.92/5,718.62 = 1,214.36/x
  3. Step 3: Cross multiply
    3,811.92x = 5,718.62 × 1,214.36
  4. Step 4: Simplify right side
    3,811.92x = 6,944,463.38
  5. Step 5: Solve for x
    x = 6,944,463.38/3,811.92
  6. Step 6: Final answer
    x = 1,821.78

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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.