Home / 3,410.56-5,115.90-1,220.86

Finding the Fourth Proportional to 3,410.56, 5,115.90 and 1,220.86

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Solution

The fourth proportional to 3,410.56, 5,115.90 and 1,220.86 is: 1,831.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,410.56 : 5,115.90 = 1,220.86 : x
  2. Step 2: Convert to fraction form
    3,410.56/5,115.90 = 1,220.86/x
  3. Step 3: Cross multiply
    3,410.56x = 5,115.90 × 1,220.86
  4. Step 4: Simplify right side
    3,410.56x = 6,245,797.67
  5. Step 5: Solve for x
    x = 6,245,797.67/3,410.56
  6. Step 6: Final answer
    x = 1,831.31

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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.