Home / 2,381.12-3,286.02-1,333.20

Finding the Fourth Proportional to 2,381.12, 3,286.02 and 1,333.20

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Solution

The fourth proportional to 2,381.12, 3,286.02 and 1,333.20 is: 1,839.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.12 : 3,286.02 = 1,333.20 : x
  2. Step 2: Convert to fraction form
    2,381.12/3,286.02 = 1,333.20/x
  3. Step 3: Cross multiply
    2,381.12x = 3,286.02 × 1,333.20
  4. Step 4: Simplify right side
    2,381.12x = 4,380,921.86
  5. Step 5: Solve for x
    x = 4,380,921.86/2,381.12
  6. Step 6: Final answer
    x = 1,839.86

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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.