Home / 3,781.96-5,217.68-2,789.62

Finding the Fourth Proportional to 3,781.96, 5,217.68 and 2,789.62

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Solution

The fourth proportional to 3,781.96, 5,217.68 and 2,789.62 is: 3,848.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.96 : 5,217.68 = 2,789.62 : x
  2. Step 2: Convert to fraction form
    3,781.96/5,217.68 = 2,789.62/x
  3. Step 3: Cross multiply
    3,781.96x = 5,217.68 × 2,789.62
  4. Step 4: Simplify right side
    3,781.96x = 14,555,344.48
  5. Step 5: Solve for x
    x = 14,555,344.48/3,781.96
  6. Step 6: Final answer
    x = 3,848.62

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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.