Home / 2,381.78-3,286.80-1,334.06

Finding the Fourth Proportional to 2,381.78, 3,286.80 and 1,334.06

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Solution

The fourth proportional to 2,381.78, 3,286.80 and 1,334.06 is: 1,840.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.78 : 3,286.80 = 1,334.06 : x
  2. Step 2: Convert to fraction form
    2,381.78/3,286.80 = 1,334.06/x
  3. Step 3: Cross multiply
    2,381.78x = 3,286.80 × 1,334.06
  4. Step 4: Simplify right side
    2,381.78x = 4,384,788.41
  5. Step 5: Solve for x
    x = 4,384,788.41/2,381.78
  6. Step 6: Final answer
    x = 1,840.97

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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.