Home / 3,811.68-5,718.06-1,179.40

Finding the Fourth Proportional to 3,811.68, 5,718.06 and 1,179.40

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Solution

The fourth proportional to 3,811.68, 5,718.06 and 1,179.40 is: 1,769.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.68 : 5,718.06 = 1,179.40 : x
  2. Step 2: Convert to fraction form
    3,811.68/5,718.06 = 1,179.40/x
  3. Step 3: Cross multiply
    3,811.68x = 5,718.06 × 1,179.40
  4. Step 4: Simplify right side
    3,811.68x = 6,743,879.96
  5. Step 5: Solve for x
    x = 6,743,879.96/3,811.68
  6. Step 6: Final answer
    x = 1,769.27

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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.