Home / 3,786.37-5,680.28-1,190.05

Finding the Fourth Proportional to 3,786.37, 5,680.28 and 1,190.05

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Solution

The fourth proportional to 3,786.37, 5,680.28 and 1,190.05 is: 1,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.37 : 5,680.28 = 1,190.05 : x
  2. Step 2: Convert to fraction form
    3,786.37/5,680.28 = 1,190.05/x
  3. Step 3: Cross multiply
    3,786.37x = 5,680.28 × 1,190.05
  4. Step 4: Simplify right side
    3,786.37x = 6,759,811.26
  5. Step 5: Solve for x
    x = 6,759,811.26/3,786.37
  6. Step 6: Final answer
    x = 1,785.30

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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.