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Finding the Fourth Proportional to 2,993.50, 4,491.77 and 1,239.80

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Solution

The fourth proportional to 2,993.50, 4,491.77 and 1,239.80 is: 1,860.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,993.50 : 4,491.77 = 1,239.80 : x
  2. Step 2: Convert to fraction form
    2,993.50/4,491.77 = 1,239.80/x
  3. Step 3: Cross multiply
    2,993.50x = 4,491.77 × 1,239.80
  4. Step 4: Simplify right side
    2,993.50x = 5,568,896.45
  5. Step 5: Solve for x
    x = 5,568,896.45/2,993.50
  6. Step 6: Final answer
    x = 1,860.33

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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.