Home / 2,786.94-4,180.41-1,325.70

Finding the Fourth Proportional to 2,786.94, 4,180.41 and 1,325.70

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Solution

The fourth proportional to 2,786.94, 4,180.41 and 1,325.70 is: 1,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.94 : 4,180.41 = 1,325.70 : x
  2. Step 2: Convert to fraction form
    2,786.94/4,180.41 = 1,325.70/x
  3. Step 3: Cross multiply
    2,786.94x = 4,180.41 × 1,325.70
  4. Step 4: Simplify right side
    2,786.94x = 5,541,969.54
  5. Step 5: Solve for x
    x = 5,541,969.54/2,786.94
  6. Step 6: Final answer
    x = 1,988.55

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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.