Home / 3,839.95-5,299.46-2,161.63

Finding the Fourth Proportional to 3,839.95, 5,299.46 and 2,161.63

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Solution

The fourth proportional to 3,839.95, 5,299.46 and 2,161.63 is: 2,983.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.95 : 5,299.46 = 2,161.63 : x
  2. Step 2: Convert to fraction form
    3,839.95/5,299.46 = 2,161.63/x
  3. Step 3: Cross multiply
    3,839.95x = 5,299.46 × 2,161.63
  4. Step 4: Simplify right side
    3,839.95x = 11,455,471.72
  5. Step 5: Solve for x
    x = 11,455,471.72/3,839.95
  6. Step 6: Final answer
    x = 2,983.23

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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.