Home / 2,979.09-4,107.78-2,035.44

Finding the Fourth Proportional to 2,979.09, 4,107.78 and 2,035.44

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Solution

The fourth proportional to 2,979.09, 4,107.78 and 2,035.44 is: 2,806.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.09 : 4,107.78 = 2,035.44 : x
  2. Step 2: Convert to fraction form
    2,979.09/4,107.78 = 2,035.44/x
  3. Step 3: Cross multiply
    2,979.09x = 4,107.78 × 2,035.44
  4. Step 4: Simplify right side
    2,979.09x = 8,361,139.72
  5. Step 5: Solve for x
    x = 8,361,139.72/2,979.09
  6. Step 6: Final answer
    x = 2,806.61

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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.