Home / 2,143.32-3,217.86-1,219.44

Finding the Fourth Proportional to 2,143.32, 3,217.86 and 1,219.44

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Solution

The fourth proportional to 2,143.32, 3,217.86 and 1,219.44 is: 1,830.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.32 : 3,217.86 = 1,219.44 : x
  2. Step 2: Convert to fraction form
    2,143.32/3,217.86 = 1,219.44/x
  3. Step 3: Cross multiply
    2,143.32x = 3,217.86 × 1,219.44
  4. Step 4: Simplify right side
    2,143.32x = 3,923,987.20
  5. Step 5: Solve for x
    x = 3,923,987.20/2,143.32
  6. Step 6: Final answer
    x = 1,830.80

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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.