Home / 3,821.68-5,273.48-2,142.86

Finding the Fourth Proportional to 3,821.68, 5,273.48 and 2,142.86

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Solution

The fourth proportional to 3,821.68, 5,273.48 and 2,142.86 is: 2,956.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.68 : 5,273.48 = 2,142.86 : x
  2. Step 2: Convert to fraction form
    3,821.68/5,273.48 = 2,142.86/x
  3. Step 3: Cross multiply
    3,821.68x = 5,273.48 × 2,142.86
  4. Step 4: Simplify right side
    3,821.68x = 11,300,318.64
  5. Step 5: Solve for x
    x = 11,300,318.64/3,821.68
  6. Step 6: Final answer
    x = 2,956.90

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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.