Home / 2,043.80-3,063.90-1,221.20

Finding the Fourth Proportional to 2,043.80, 3,063.90 and 1,221.20

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Solution

The fourth proportional to 2,043.80, 3,063.90 and 1,221.20 is: 1,830.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,043.80 : 3,063.90 = 1,221.20 : x
  2. Step 2: Convert to fraction form
    2,043.80/3,063.90 = 1,221.20/x
  3. Step 3: Cross multiply
    2,043.80x = 3,063.90 × 1,221.20
  4. Step 4: Simplify right side
    2,043.80x = 3,741,634.68
  5. Step 5: Solve for x
    x = 3,741,634.68/2,043.80
  6. Step 6: Final answer
    x = 1,830.72

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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.