Home / 7,180.13-9,908.69-3,993.68

Finding the Fourth Proportional to 7,180.13, 9,908.69 and 3,993.68

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Solution

The fourth proportional to 7,180.13, 9,908.69 and 3,993.68 is: 5,511.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.13 : 9,908.69 = 3,993.68 : x
  2. Step 2: Convert to fraction form
    7,180.13/9,908.69 = 3,993.68/x
  3. Step 3: Cross multiply
    7,180.13x = 9,908.69 × 3,993.68
  4. Step 4: Simplify right side
    7,180.13x = 39,572,067.57
  5. Step 5: Solve for x
    x = 39,572,067.57/7,180.13
  6. Step 6: Final answer
    x = 5,511.33

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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.