Home / 2,172.68-3,259.50-1,198.28

Finding the Fourth Proportional to 2,172.68, 3,259.50 and 1,198.28

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Solution

The fourth proportional to 2,172.68, 3,259.50 and 1,198.28 is: 1,797.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.68 : 3,259.50 = 1,198.28 : x
  2. Step 2: Convert to fraction form
    2,172.68/3,259.50 = 1,198.28/x
  3. Step 3: Cross multiply
    2,172.68x = 3,259.50 × 1,198.28
  4. Step 4: Simplify right side
    2,172.68x = 3,905,793.66
  5. Step 5: Solve for x
    x = 3,905,793.66/2,172.68
  6. Step 6: Final answer
    x = 1,797.68

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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.