Home / 3,065-4,228.39-2,399.18

Finding the Fourth Proportional to 3,065, 4,228.39 and 2,399.18

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Solution

The fourth proportional to 3,065, 4,228.39 and 2,399.18 is: 3,309.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,065 : 4,228.39 = 2,399.18 : x
  2. Step 2: Convert to fraction form
    3,065/4,228.39 = 2,399.18/x
  3. Step 3: Cross multiply
    3,065x = 4,228.39 × 2,399.18
  4. Step 4: Simplify right side
    3,065x = 10,144,668.72
  5. Step 5: Solve for x
    x = 10,144,668.72/3,065
  6. Step 6: Final answer
    x = 3,309.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.