Home / 2,381.42-3,286.14-1,333.28

Finding the Fourth Proportional to 2,381.42, 3,286.14 and 1,333.28

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Solution

The fourth proportional to 2,381.42, 3,286.14 and 1,333.28 is: 1,839.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.42 : 3,286.14 = 1,333.28 : x
  2. Step 2: Convert to fraction form
    2,381.42/3,286.14 = 1,333.28/x
  3. Step 3: Cross multiply
    2,381.42x = 3,286.14 × 1,333.28
  4. Step 4: Simplify right side
    2,381.42x = 4,381,344.74
  5. Step 5: Solve for x
    x = 4,381,344.74/2,381.42
  6. Step 6: Final answer
    x = 1,839.80

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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.