Home / 3,872.90-5,344.73-2,381.32

Finding the Fourth Proportional to 3,872.90, 5,344.73 and 2,381.32

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Solution

The fourth proportional to 3,872.90, 5,344.73 and 2,381.32 is: 3,286.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.90 : 5,344.73 = 2,381.32 : x
  2. Step 2: Convert to fraction form
    3,872.90/5,344.73 = 2,381.32/x
  3. Step 3: Cross multiply
    3,872.90x = 5,344.73 × 2,381.32
  4. Step 4: Simplify right side
    3,872.90x = 12,727,512.44
  5. Step 5: Solve for x
    x = 12,727,512.44/3,872.90
  6. Step 6: Final answer
    x = 3,286.30

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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.