Home / 1,218.80-1,825.46-1,177.79

Finding the Fourth Proportional to 1,218.80, 1,825.46 and 1,177.79

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Solution

The fourth proportional to 1,218.80, 1,825.46 and 1,177.79 is: 1,764.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.80 : 1,825.46 = 1,177.79 : x
  2. Step 2: Convert to fraction form
    1,218.80/1,825.46 = 1,177.79/x
  3. Step 3: Cross multiply
    1,218.80x = 1,825.46 × 1,177.79
  4. Step 4: Simplify right side
    1,218.80x = 2,150,007.21
  5. Step 5: Solve for x
    x = 2,150,007.21/1,218.80
  6. Step 6: Final answer
    x = 1,764.04

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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.