Home / 3,220.25-4,829.13-1,139.87

Finding the Fourth Proportional to 3,220.25, 4,829.13 and 1,139.87

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Solution

The fourth proportional to 3,220.25, 4,829.13 and 1,139.87 is: 1,709.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.25 : 4,829.13 = 1,139.87 : x
  2. Step 2: Convert to fraction form
    3,220.25/4,829.13 = 1,139.87/x
  3. Step 3: Cross multiply
    3,220.25x = 4,829.13 × 1,139.87
  4. Step 4: Simplify right side
    3,220.25x = 5,504,556.27
  5. Step 5: Solve for x
    x = 5,504,556.27/3,220.25
  6. Step 6: Final answer
    x = 1,709.36

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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.