Home / 2,769.69-4,149.92-1,988.52

Finding the Fourth Proportional to 2,769.69, 4,149.92 and 1,988.52

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Solution

The fourth proportional to 2,769.69, 4,149.92 and 1,988.52 is: 2,979.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.69 : 4,149.92 = 1,988.52 : x
  2. Step 2: Convert to fraction form
    2,769.69/4,149.92 = 1,988.52/x
  3. Step 3: Cross multiply
    2,769.69x = 4,149.92 × 1,988.52
  4. Step 4: Simplify right side
    2,769.69x = 8,252,198.92
  5. Step 5: Solve for x
    x = 8,252,198.92/2,769.69
  6. Step 6: Final answer
    x = 2,979.47

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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.