Home / 2,134.40-3,201.60-2,112.80

Finding the Fourth Proportional to 2,134.40, 3,201.60 and 2,112.80

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Solution

The fourth proportional to 2,134.40, 3,201.60 and 2,112.80 is: 3,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,134.40 : 3,201.60 = 2,112.80 : x
  2. Step 2: Convert to fraction form
    2,134.40/3,201.60 = 2,112.80/x
  3. Step 3: Cross multiply
    2,134.40x = 3,201.60 × 2,112.80
  4. Step 4: Simplify right side
    2,134.40x = 6,764,340.48
  5. Step 5: Solve for x
    x = 6,764,340.48/2,134.40
  6. Step 6: Final answer
    x = 3,169.20

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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.