Home / 3,390.46-5,087.30-1,200.22

Finding the Fourth Proportional to 3,390.46, 5,087.30 and 1,200.22

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Solution

The fourth proportional to 3,390.46, 5,087.30 and 1,200.22 is: 1,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.46 : 5,087.30 = 1,200.22 : x
  2. Step 2: Convert to fraction form
    3,390.46/5,087.30 = 1,200.22/x
  3. Step 3: Cross multiply
    3,390.46x = 5,087.30 × 1,200.22
  4. Step 4: Simplify right side
    3,390.46x = 6,105,879.21
  5. Step 5: Solve for x
    x = 6,105,879.21/3,390.46
  6. Step 6: Final answer
    x = 1,800.90

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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.