Home / 3,211.26-4,816.76-1,911.75

Finding the Fourth Proportional to 3,211.26, 4,816.76 and 1,911.75

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Solution

The fourth proportional to 3,211.26, 4,816.76 and 1,911.75 is: 2,867.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.26 : 4,816.76 = 1,911.75 : x
  2. Step 2: Convert to fraction form
    3,211.26/4,816.76 = 1,911.75/x
  3. Step 3: Cross multiply
    3,211.26x = 4,816.76 × 1,911.75
  4. Step 4: Simplify right side
    3,211.26x = 9,208,431.37
  5. Step 5: Solve for x
    x = 9,208,431.37/3,211.26
  6. Step 6: Final answer
    x = 2,867.54

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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.