Home / 2,381.28-3,286.11-1,333.56

Finding the Fourth Proportional to 2,381.28, 3,286.11 and 1,333.56

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Solution

The fourth proportional to 2,381.28, 3,286.11 and 1,333.56 is: 1,840.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.28 : 3,286.11 = 1,333.56 : x
  2. Step 2: Convert to fraction form
    2,381.28/3,286.11 = 1,333.56/x
  3. Step 3: Cross multiply
    2,381.28x = 3,286.11 × 1,333.56
  4. Step 4: Simplify right side
    2,381.28x = 4,382,224.85
  5. Step 5: Solve for x
    x = 4,382,224.85/2,381.28
  6. Step 6: Final answer
    x = 1,840.28

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1.5x scale

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.