Home / 2,193.12-3,289.82-1,269.72

Finding the Fourth Proportional to 2,193.12, 3,289.82 and 1,269.72

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Solution

The fourth proportional to 2,193.12, 3,289.82 and 1,269.72 is: 1,904.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.12 : 3,289.82 = 1,269.72 : x
  2. Step 2: Convert to fraction form
    2,193.12/3,289.82 = 1,269.72/x
  3. Step 3: Cross multiply
    2,193.12x = 3,289.82 × 1,269.72
  4. Step 4: Simplify right side
    2,193.12x = 4,177,143.90
  5. Step 5: Solve for x
    x = 4,177,143.90/2,193.12
  6. Step 6: Final answer
    x = 1,904.66

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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.