Home / 2,193.64-3,286.50-1,205.39

Finding the Fourth Proportional to 2,193.64, 3,286.50 and 1,205.39

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Solution

The fourth proportional to 2,193.64, 3,286.50 and 1,205.39 is: 1,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.64 : 3,286.50 = 1,205.39 : x
  2. Step 2: Convert to fraction form
    2,193.64/3,286.50 = 1,205.39/x
  3. Step 3: Cross multiply
    2,193.64x = 3,286.50 × 1,205.39
  4. Step 4: Simplify right side
    2,193.64x = 3,961,514.24
  5. Step 5: Solve for x
    x = 3,961,514.24/2,193.64
  6. Step 6: Final answer
    x = 1,805.91

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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.