Home / 3,579.39-4,939.79-2,007.72

Finding the Fourth Proportional to 3,579.39, 4,939.79 and 2,007.72

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Solution

The fourth proportional to 3,579.39, 4,939.79 and 2,007.72 is: 2,770.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.39 : 4,939.79 = 2,007.72 : x
  2. Step 2: Convert to fraction form
    3,579.39/4,939.79 = 2,007.72/x
  3. Step 3: Cross multiply
    3,579.39x = 4,939.79 × 2,007.72
  4. Step 4: Simplify right side
    3,579.39x = 9,917,705.14
  5. Step 5: Solve for x
    x = 9,917,705.14/3,579.39
  6. Step 6: Final answer
    x = 2,770.78

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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.