Home / 2,146.87-3,219.39-1,222.86

Finding the Fourth Proportional to 2,146.87, 3,219.39 and 1,222.86

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Solution

The fourth proportional to 2,146.87, 3,219.39 and 1,222.86 is: 1,833.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.87 : 3,219.39 = 1,222.86 : x
  2. Step 2: Convert to fraction form
    2,146.87/3,219.39 = 1,222.86/x
  3. Step 3: Cross multiply
    2,146.87x = 3,219.39 × 1,222.86
  4. Step 4: Simplify right side
    2,146.87x = 3,936,863.26
  5. Step 5: Solve for x
    x = 3,936,863.26/2,146.87
  6. Step 6: Final answer
    x = 1,833.77

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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.