Home / 3,198.40-4,798.98-2,321.87

Finding the Fourth Proportional to 3,198.40, 4,798.98 and 2,321.87

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Solution

The fourth proportional to 3,198.40, 4,798.98 and 2,321.87 is: 3,483.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.40 : 4,798.98 = 2,321.87 : x
  2. Step 2: Convert to fraction form
    3,198.40/4,798.98 = 2,321.87/x
  3. Step 3: Cross multiply
    3,198.40x = 4,798.98 × 2,321.87
  4. Step 4: Simplify right side
    3,198.40x = 11,142,607.69
  5. Step 5: Solve for x
    x = 11,142,607.69/3,198.40
  6. Step 6: Final answer
    x = 3,483.81

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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.