Home / 2,187.09-3,277.94-1,211.85

Finding the Fourth Proportional to 2,187.09, 3,277.94 and 1,211.85

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Solution

The fourth proportional to 2,187.09, 3,277.94 and 1,211.85 is: 1,816.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.09 : 3,277.94 = 1,211.85 : x
  2. Step 2: Convert to fraction form
    2,187.09/3,277.94 = 1,211.85/x
  3. Step 3: Cross multiply
    2,187.09x = 3,277.94 × 1,211.85
  4. Step 4: Simplify right side
    2,187.09x = 3,972,365.53
  5. Step 5: Solve for x
    x = 3,972,365.53/2,187.09
  6. Step 6: Final answer
    x = 1,816.28

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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.