Home / 2,520.14-3,781.58-1,221.61

Finding the Fourth Proportional to 2,520.14, 3,781.58 and 1,221.61

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Solution

The fourth proportional to 2,520.14, 3,781.58 and 1,221.61 is: 1,833.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.14 : 3,781.58 = 1,221.61 : x
  2. Step 2: Convert to fraction form
    2,520.14/3,781.58 = 1,221.61/x
  3. Step 3: Cross multiply
    2,520.14x = 3,781.58 × 1,221.61
  4. Step 4: Simplify right side
    2,520.14x = 4,619,610.91
  5. Step 5: Solve for x
    x = 4,619,610.91/2,520.14
  6. Step 6: Final answer
    x = 1,833.08

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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.