Home / 3,839.96-5,299.60-2,161.42

Finding the Fourth Proportional to 3,839.96, 5,299.60 and 2,161.42

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Solution

The fourth proportional to 3,839.96, 5,299.60 and 2,161.42 is: 2,983.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.96 : 5,299.60 = 2,161.42 : x
  2. Step 2: Convert to fraction form
    3,839.96/5,299.60 = 2,161.42/x
  3. Step 3: Cross multiply
    3,839.96x = 5,299.60 × 2,161.42
  4. Step 4: Simplify right side
    3,839.96x = 11,454,661.43
  5. Step 5: Solve for x
    x = 11,454,661.43/3,839.96
  6. Step 6: Final answer
    x = 2,983.02

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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.