Home / 3,786.70-5,225.02-2,108.06

Finding the Fourth Proportional to 3,786.70, 5,225.02 and 2,108.06

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Solution

The fourth proportional to 3,786.70, 5,225.02 and 2,108.06 is: 2,908.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.70 : 5,225.02 = 2,108.06 : x
  2. Step 2: Convert to fraction form
    3,786.70/5,225.02 = 2,108.06/x
  3. Step 3: Cross multiply
    3,786.70x = 5,225.02 × 2,108.06
  4. Step 4: Simplify right side
    3,786.70x = 11,014,655.66
  5. Step 5: Solve for x
    x = 11,014,655.66/3,786.70
  6. Step 6: Final answer
    x = 2,908.78

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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.