Home / 3,786.40-5,685.05-2,747.58

Finding the Fourth Proportional to 3,786.40, 5,685.05 and 2,747.58

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Solution

The fourth proportional to 3,786.40, 5,685.05 and 2,747.58 is: 4,125.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.40 : 5,685.05 = 2,747.58 : x
  2. Step 2: Convert to fraction form
    3,786.40/5,685.05 = 2,747.58/x
  3. Step 3: Cross multiply
    3,786.40x = 5,685.05 × 2,747.58
  4. Step 4: Simplify right side
    3,786.40x = 15,620,129.68
  5. Step 5: Solve for x
    x = 15,620,129.68/3,786.40
  6. Step 6: Final answer
    x = 4,125.32

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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.