Home / 2,680.43-4,013.40-1,940.81

Finding the Fourth Proportional to 2,680.43, 4,013.40 and 1,940.81

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Solution

The fourth proportional to 2,680.43, 4,013.40 and 1,940.81 is: 2,905.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.43 : 4,013.40 = 1,940.81 : x
  2. Step 2: Convert to fraction form
    2,680.43/4,013.40 = 1,940.81/x
  3. Step 3: Cross multiply
    2,680.43x = 4,013.40 × 1,940.81
  4. Step 4: Simplify right side
    2,680.43x = 7,789,246.85
  5. Step 5: Solve for x
    x = 7,789,246.85/2,680.43
  6. Step 6: Final answer
    x = 2,905.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.