Home / 3,711.26-5,121.30-2,219.20

Finding the Fourth Proportional to 3,711.26, 5,121.30 and 2,219.20

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Solution

The fourth proportional to 3,711.26, 5,121.30 and 2,219.20 is: 3,062.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.26 : 5,121.30 = 2,219.20 : x
  2. Step 2: Convert to fraction form
    3,711.26/5,121.30 = 2,219.20/x
  3. Step 3: Cross multiply
    3,711.26x = 5,121.30 × 2,219.20
  4. Step 4: Simplify right side
    3,711.26x = 11,365,188.96
  5. Step 5: Solve for x
    x = 11,365,188.96/3,711.26
  6. Step 6: Final answer
    x = 3,062.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.