Home / 2,520.95-3,781.42-1,222.61

Finding the Fourth Proportional to 2,520.95, 3,781.42 and 1,222.61

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Solution

The fourth proportional to 2,520.95, 3,781.42 and 1,222.61 is: 1,833.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.95 : 3,781.42 = 1,222.61 : x
  2. Step 2: Convert to fraction form
    2,520.95/3,781.42 = 1,222.61/x
  3. Step 3: Cross multiply
    2,520.95x = 3,781.42 × 1,222.61
  4. Step 4: Simplify right side
    2,520.95x = 4,623,183.00
  5. Step 5: Solve for x
    x = 4,623,183.00/2,520.95
  6. Step 6: Final answer
    x = 1,833.91

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1.5x scale

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.