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Finding the Fourth Proportional to 3,859.41, 5,781.03 and 3,199.72

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Solution

The fourth proportional to 3,859.41, 5,781.03 and 3,199.72 is: 4,792.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.41 : 5,781.03 = 3,199.72 : x
  2. Step 2: Convert to fraction form
    3,859.41/5,781.03 = 3,199.72/x
  3. Step 3: Cross multiply
    3,859.41x = 5,781.03 × 3,199.72
  4. Step 4: Simplify right side
    3,859.41x = 18,497,677.31
  5. Step 5: Solve for x
    x = 18,497,677.31/3,859.41
  6. Step 6: Final answer
    x = 4,792.88

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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.