Home / 3,109.26-4,292.85-2,399.85

Finding the Fourth Proportional to 3,109.26, 4,292.85 and 2,399.85

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Solution

The fourth proportional to 3,109.26, 4,292.85 and 2,399.85 is: 3,313.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.26 : 4,292.85 = 2,399.85 : x
  2. Step 2: Convert to fraction form
    3,109.26/4,292.85 = 2,399.85/x
  3. Step 3: Cross multiply
    3,109.26x = 4,292.85 × 2,399.85
  4. Step 4: Simplify right side
    3,109.26x = 10,302,196.07
  5. Step 5: Solve for x
    x = 10,302,196.07/3,109.26
  6. Step 6: Final answer
    x = 3,313.39

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1.5x scale

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.