Home / 3,821.80-5,732.62-1,872.64

Finding the Fourth Proportional to 3,821.80, 5,732.62 and 1,872.64

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Solution

The fourth proportional to 3,821.80, 5,732.62 and 1,872.64 is: 2,808.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.80 : 5,732.62 = 1,872.64 : x
  2. Step 2: Convert to fraction form
    3,821.80/5,732.62 = 1,872.64/x
  3. Step 3: Cross multiply
    3,821.80x = 5,732.62 × 1,872.64
  4. Step 4: Simplify right side
    3,821.80x = 10,735,114.29
  5. Step 5: Solve for x
    x = 10,735,114.29/3,821.80
  6. Step 6: Final answer
    x = 2,808.92

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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.