Home / 2,782.94-4,171.66-1,223.78

Finding the Fourth Proportional to 2,782.94, 4,171.66 and 1,223.78

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Solution

The fourth proportional to 2,782.94, 4,171.66 and 1,223.78 is: 1,834.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.94 : 4,171.66 = 1,223.78 : x
  2. Step 2: Convert to fraction form
    2,782.94/4,171.66 = 1,223.78/x
  3. Step 3: Cross multiply
    2,782.94x = 4,171.66 × 1,223.78
  4. Step 4: Simplify right side
    2,782.94x = 5,105,170.16
  5. Step 5: Solve for x
    x = 5,105,170.16/2,782.94
  6. Step 6: Final answer
    x = 1,834.46

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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.