Home / 2,381.78-3,286.10-1,333.64

Finding the Fourth Proportional to 2,381.78, 3,286.10 and 1,333.64

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Solution

The fourth proportional to 2,381.78, 3,286.10 and 1,333.64 is: 1,840.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.78 : 3,286.10 = 1,333.64 : x
  2. Step 2: Convert to fraction form
    2,381.78/3,286.10 = 1,333.64/x
  3. Step 3: Cross multiply
    2,381.78x = 3,286.10 × 1,333.64
  4. Step 4: Simplify right side
    2,381.78x = 4,382,474.40
  5. Step 5: Solve for x
    x = 4,382,474.40/2,381.78
  6. Step 6: Final answer
    x = 1,840.00

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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.