Home / 2,215.90-3,323.85-1,351.90

Finding the Fourth Proportional to 2,215.90, 3,323.85 and 1,351.90

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Solution

The fourth proportional to 2,215.90, 3,323.85 and 1,351.90 is: 2,027.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.90 : 3,323.85 = 1,351.90 : x
  2. Step 2: Convert to fraction form
    2,215.90/3,323.85 = 1,351.90/x
  3. Step 3: Cross multiply
    2,215.90x = 3,323.85 × 1,351.90
  4. Step 4: Simplify right side
    2,215.90x = 4,493,512.82
  5. Step 5: Solve for x
    x = 4,493,512.82/2,215.90
  6. Step 6: Final answer
    x = 2,027.85

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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.