Home / 7,109.43-9,811.57-3,923.36

Finding the Fourth Proportional to 7,109.43, 9,811.57 and 3,923.36

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Solution

The fourth proportional to 7,109.43, 9,811.57 and 3,923.36 is: 5,414.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.43 : 9,811.57 = 3,923.36 : x
  2. Step 2: Convert to fraction form
    7,109.43/9,811.57 = 3,923.36/x
  3. Step 3: Cross multiply
    7,109.43x = 9,811.57 × 3,923.36
  4. Step 4: Simplify right side
    7,109.43x = 38,494,321.28
  5. Step 5: Solve for x
    x = 38,494,321.28/7,109.43
  6. Step 6: Final answer
    x = 5,414.54

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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.