Home / 3,855.88-5,786.13-1,664.61

Finding the Fourth Proportional to 3,855.88, 5,786.13 and 1,664.61

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Solution

The fourth proportional to 3,855.88, 5,786.13 and 1,664.61 is: 2,497.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.88 : 5,786.13 = 1,664.61 : x
  2. Step 2: Convert to fraction form
    3,855.88/5,786.13 = 1,664.61/x
  3. Step 3: Cross multiply
    3,855.88x = 5,786.13 × 1,664.61
  4. Step 4: Simplify right side
    3,855.88x = 9,631,649.86
  5. Step 5: Solve for x
    x = 9,631,649.86/3,855.88
  6. Step 6: Final answer
    x = 2,497.91

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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.