Home / 3,139.09-4,329.42-2,668.54

Finding the Fourth Proportional to 3,139.09, 4,329.42 and 2,668.54

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Solution

The fourth proportional to 3,139.09, 4,329.42 and 2,668.54 is: 3,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.09 : 4,329.42 = 2,668.54 : x
  2. Step 2: Convert to fraction form
    3,139.09/4,329.42 = 2,668.54/x
  3. Step 3: Cross multiply
    3,139.09x = 4,329.42 × 2,668.54
  4. Step 4: Simplify right side
    3,139.09x = 11,553,208.80
  5. Step 5: Solve for x
    x = 11,553,208.80/3,139.09
  6. Step 6: Final answer
    x = 3,680.44

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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.