Home / 2,255.32-3,113.20-2,018.85

Finding the Fourth Proportional to 2,255.32, 3,113.20 and 2,018.85

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Solution

The fourth proportional to 2,255.32, 3,113.20 and 2,018.85 is: 2,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.32 : 3,113.20 = 2,018.85 : x
  2. Step 2: Convert to fraction form
    2,255.32/3,113.20 = 2,018.85/x
  3. Step 3: Cross multiply
    2,255.32x = 3,113.20 × 2,018.85
  4. Step 4: Simplify right side
    2,255.32x = 6,285,083.82
  5. Step 5: Solve for x
    x = 6,285,083.82/2,255.32
  6. Step 6: Final answer
    x = 2,786.78

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1.5x scale

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.