Home / 3,190.68-4,786.20-1,242.72

Finding the Fourth Proportional to 3,190.68, 4,786.20 and 1,242.72

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Solution

The fourth proportional to 3,190.68, 4,786.20 and 1,242.72 is: 1,864.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.68 : 4,786.20 = 1,242.72 : x
  2. Step 2: Convert to fraction form
    3,190.68/4,786.20 = 1,242.72/x
  3. Step 3: Cross multiply
    3,190.68x = 4,786.20 × 1,242.72
  4. Step 4: Simplify right side
    3,190.68x = 5,947,906.46
  5. Step 5: Solve for x
    x = 5,947,906.46/3,190.68
  6. Step 6: Final answer
    x = 1,864.15

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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.