Home / 2,212.31-3,052.99-1,328.70

Finding the Fourth Proportional to 2,212.31, 3,052.99 and 1,328.70

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Solution

The fourth proportional to 2,212.31, 3,052.99 and 1,328.70 is: 1,833.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.31 : 3,052.99 = 1,328.70 : x
  2. Step 2: Convert to fraction form
    2,212.31/3,052.99 = 1,328.70/x
  3. Step 3: Cross multiply
    2,212.31x = 3,052.99 × 1,328.70
  4. Step 4: Simplify right side
    2,212.31x = 4,056,520.92
  5. Step 5: Solve for x
    x = 4,056,520.92/2,212.31
  6. Step 6: Final answer
    x = 1,833.61

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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.