Home / 3,419.80-5,130.53-1,198.31

Finding the Fourth Proportional to 3,419.80, 5,130.53 and 1,198.31

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Solution

The fourth proportional to 3,419.80, 5,130.53 and 1,198.31 is: 1,797.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.80 : 5,130.53 = 1,198.31 : x
  2. Step 2: Convert to fraction form
    3,419.80/5,130.53 = 1,198.31/x
  3. Step 3: Cross multiply
    3,419.80x = 5,130.53 × 1,198.31
  4. Step 4: Simplify right side
    3,419.80x = 6,147,965.40
  5. Step 5: Solve for x
    x = 6,147,965.40/3,419.80
  6. Step 6: Final answer
    x = 1,797.76

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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.