Home / 3,821.64-5,273.86-2,143.06

Finding the Fourth Proportional to 3,821.64, 5,273.86 and 2,143.06

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Solution

The fourth proportional to 3,821.64, 5,273.86 and 2,143.06 is: 2,957.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.64 : 5,273.86 = 2,143.06 : x
  2. Step 2: Convert to fraction form
    3,821.64/5,273.86 = 2,143.06/x
  3. Step 3: Cross multiply
    3,821.64x = 5,273.86 × 2,143.06
  4. Step 4: Simplify right side
    3,821.64x = 11,302,198.41
  5. Step 5: Solve for x
    x = 11,302,198.41/3,821.64
  6. Step 6: Final answer
    x = 2,957.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.