Home / 3,811.23-5,718.69-2,079.81

Finding the Fourth Proportional to 3,811.23, 5,718.69 and 2,079.81

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Solution

The fourth proportional to 3,811.23, 5,718.69 and 2,079.81 is: 3,120.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.23 : 5,718.69 = 2,079.81 : x
  2. Step 2: Convert to fraction form
    3,811.23/5,718.69 = 2,079.81/x
  3. Step 3: Cross multiply
    3,811.23x = 5,718.69 × 2,079.81
  4. Step 4: Simplify right side
    3,811.23x = 11,893,788.65
  5. Step 5: Solve for x
    x = 11,893,788.65/3,811.23
  6. Step 6: Final answer
    x = 3,120.72

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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.