Home / 2,939.70-4,057.47-1,889.94

Finding the Fourth Proportional to 2,939.70, 4,057.47 and 1,889.94

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Solution

The fourth proportional to 2,939.70, 4,057.47 and 1,889.94 is: 2,608.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.70 : 4,057.47 = 1,889.94 : x
  2. Step 2: Convert to fraction form
    2,939.70/4,057.47 = 1,889.94/x
  3. Step 3: Cross multiply
    2,939.70x = 4,057.47 × 1,889.94
  4. Step 4: Simplify right side
    2,939.70x = 7,668,374.85
  5. Step 5: Solve for x
    x = 7,668,374.85/2,939.70
  6. Step 6: Final answer
    x = 2,608.56

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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.