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Finding the Fourth Proportional to 3,469.79, 5,208.20 and 3,076.99

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Solution

The fourth proportional to 3,469.79, 5,208.20 and 3,076.99 is: 4,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.79 : 5,208.20 = 3,076.99 : x
  2. Step 2: Convert to fraction form
    3,469.79/5,208.20 = 3,076.99/x
  3. Step 3: Cross multiply
    3,469.79x = 5,208.20 × 3,076.99
  4. Step 4: Simplify right side
    3,469.79x = 16,025,562.45
  5. Step 5: Solve for x
    x = 16,025,562.45/3,469.79
  6. Step 6: Final answer
    x = 4,618.60

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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.