Home / 3,421.12-5,133.82-1,229.80

Finding the Fourth Proportional to 3,421.12, 5,133.82 and 1,229.80

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Solution

The fourth proportional to 3,421.12, 5,133.82 and 1,229.80 is: 1,845.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.12 : 5,133.82 = 1,229.80 : x
  2. Step 2: Convert to fraction form
    3,421.12/5,133.82 = 1,229.80/x
  3. Step 3: Cross multiply
    3,421.12x = 5,133.82 × 1,229.80
  4. Step 4: Simplify right side
    3,421.12x = 6,313,571.84
  5. Step 5: Solve for x
    x = 6,313,571.84/3,421.12
  6. Step 6: Final answer
    x = 1,845.47

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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.