Home / 3,811.40-5,718.26-1,811.61

Finding the Fourth Proportional to 3,811.40, 5,718.26 and 1,811.61

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Solution

The fourth proportional to 3,811.40, 5,718.26 and 1,811.61 is: 2,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.40 : 5,718.26 = 1,811.61 : x
  2. Step 2: Convert to fraction form
    3,811.40/5,718.26 = 1,811.61/x
  3. Step 3: Cross multiply
    3,811.40x = 5,718.26 × 1,811.61
  4. Step 4: Simplify right side
    3,811.40x = 10,359,257.00
  5. Step 5: Solve for x
    x = 10,359,257.00/3,811.40
  6. Step 6: Final answer
    x = 2,717.97

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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.