Home / 3,939.35-5,433.39-2,680.02

Finding the Fourth Proportional to 3,939.35, 5,433.39 and 2,680.02

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Solution

The fourth proportional to 3,939.35, 5,433.39 and 2,680.02 is: 3,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.35 : 5,433.39 = 2,680.02 : x
  2. Step 2: Convert to fraction form
    3,939.35/5,433.39 = 2,680.02/x
  3. Step 3: Cross multiply
    3,939.35x = 5,433.39 × 2,680.02
  4. Step 4: Simplify right side
    3,939.35x = 14,561,593.87
  5. Step 5: Solve for x
    x = 14,561,593.87/3,939.35
  6. Step 6: Final answer
    x = 3,696.45

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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.