Home / 3,409.20-5,118.60-2,679.60

Finding the Fourth Proportional to 3,409.20, 5,118.60 and 2,679.60

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Solution

The fourth proportional to 3,409.20, 5,118.60 and 2,679.60 is: 4,023.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.20 : 5,118.60 = 2,679.60 : x
  2. Step 2: Convert to fraction form
    3,409.20/5,118.60 = 2,679.60/x
  3. Step 3: Cross multiply
    3,409.20x = 5,118.60 × 2,679.60
  4. Step 4: Simplify right side
    3,409.20x = 13,715,800.56
  5. Step 5: Solve for x
    x = 13,715,800.56/3,409.20
  6. Step 6: Final answer
    x = 4,023.17

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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.