Home / 2,121.40-3,182.09-1,196.54

Finding the Fourth Proportional to 2,121.40, 3,182.09 and 1,196.54

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Solution

The fourth proportional to 2,121.40, 3,182.09 and 1,196.54 is: 1,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.40 : 3,182.09 = 1,196.54 : x
  2. Step 2: Convert to fraction form
    2,121.40/3,182.09 = 1,196.54/x
  3. Step 3: Cross multiply
    2,121.40x = 3,182.09 × 1,196.54
  4. Step 4: Simplify right side
    2,121.40x = 3,807,485.05
  5. Step 5: Solve for x
    x = 3,807,485.05/2,121.40
  6. Step 6: Final answer
    x = 1,794.80

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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.