Home / 3,786.89-5,225.39-2,108.07

Finding the Fourth Proportional to 3,786.89, 5,225.39 and 2,108.07

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Solution

The fourth proportional to 3,786.89, 5,225.39 and 2,108.07 is: 2,908.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.89 : 5,225.39 = 2,108.07 : x
  2. Step 2: Convert to fraction form
    3,786.89/5,225.39 = 2,108.07/x
  3. Step 3: Cross multiply
    3,786.89x = 5,225.39 × 2,108.07
  4. Step 4: Simplify right side
    3,786.89x = 11,015,477.36
  5. Step 5: Solve for x
    x = 11,015,477.36/3,786.89
  6. Step 6: Final answer
    x = 2,908.85

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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.