Home / 2,798.90-4,198.81-949.83

Finding the Fourth Proportional to 2,798.90, 4,198.81 and 949.83

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Solution

The fourth proportional to 2,798.90, 4,198.81 and 949.83 is: 1,424.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.90 : 4,198.81 = 949.83 : x
  2. Step 2: Convert to fraction form
    2,798.90/4,198.81 = 949.83/x
  3. Step 3: Cross multiply
    2,798.90x = 4,198.81 × 949.83
  4. Step 4: Simplify right side
    2,798.90x = 3,988,142.03
  5. Step 5: Solve for x
    x = 3,988,142.03/2,798.90
  6. Step 6: Final answer
    x = 1,424.89

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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.