Home / 3,982.80-5,975.82-1,790.04

Finding the Fourth Proportional to 3,982.80, 5,975.82 and 1,790.04

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Solution

The fourth proportional to 3,982.80, 5,975.82 and 1,790.04 is: 2,685.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.80 : 5,975.82 = 1,790.04 : x
  2. Step 2: Convert to fraction form
    3,982.80/5,975.82 = 1,790.04/x
  3. Step 3: Cross multiply
    3,982.80x = 5,975.82 × 1,790.04
  4. Step 4: Simplify right side
    3,982.80x = 10,696,956.83
  5. Step 5: Solve for x
    x = 10,696,956.83/3,982.80
  6. Step 6: Final answer
    x = 2,685.79

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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.