Home / 3,859.59-5,786.94-2,129.43

Finding the Fourth Proportional to 3,859.59, 5,786.94 and 2,129.43

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Solution

The fourth proportional to 3,859.59, 5,786.94 and 2,129.43 is: 3,192.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.59 : 5,786.94 = 2,129.43 : x
  2. Step 2: Convert to fraction form
    3,859.59/5,786.94 = 2,129.43/x
  3. Step 3: Cross multiply
    3,859.59x = 5,786.94 × 2,129.43
  4. Step 4: Simplify right side
    3,859.59x = 12,322,883.64
  5. Step 5: Solve for x
    x = 12,322,883.64/3,859.59
  6. Step 6: Final answer
    x = 3,192.80

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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.