Home / 2,939.05-4,055.82-1,819.70

Finding the Fourth Proportional to 2,939.05, 4,055.82 and 1,819.70

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Solution

The fourth proportional to 2,939.05, 4,055.82 and 1,819.70 is: 2,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.05 : 4,055.82 = 1,819.70 : x
  2. Step 2: Convert to fraction form
    2,939.05/4,055.82 = 1,819.70/x
  3. Step 3: Cross multiply
    2,939.05x = 4,055.82 × 1,819.70
  4. Step 4: Simplify right side
    2,939.05x = 7,380,375.65
  5. Step 5: Solve for x
    x = 7,380,375.65/2,939.05
  6. Step 6: Final answer
    x = 2,511.14

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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.