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Finding the Fourth Proportional to 3,879.97, 5,357.03 and 3,632.11

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Solution

The fourth proportional to 3,879.97, 5,357.03 and 3,632.11 is: 5,014.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.97 : 5,357.03 = 3,632.11 : x
  2. Step 2: Convert to fraction form
    3,879.97/5,357.03 = 3,632.11/x
  3. Step 3: Cross multiply
    3,879.97x = 5,357.03 × 3,632.11
  4. Step 4: Simplify right side
    3,879.97x = 19,457,322.23
  5. Step 5: Solve for x
    x = 19,457,322.23/3,879.97
  6. Step 6: Final answer
    x = 5,014.81

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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.