Home / 3,781.20-5,659.65-2,021.79

Finding the Fourth Proportional to 3,781.20, 5,659.65 and 2,021.79

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Solution

The fourth proportional to 3,781.20, 5,659.65 and 2,021.79 is: 3,026.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.20 : 5,659.65 = 2,021.79 : x
  2. Step 2: Convert to fraction form
    3,781.20/5,659.65 = 2,021.79/x
  3. Step 3: Cross multiply
    3,781.20x = 5,659.65 × 2,021.79
  4. Step 4: Simplify right side
    3,781.20x = 11,442,623.77
  5. Step 5: Solve for x
    x = 11,442,623.77/3,781.20
  6. Step 6: Final answer
    x = 3,026.19

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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.