Home / 6,131.92-8,458.64-3,889.84

Finding the Fourth Proportional to 6,131.92, 8,458.64 and 3,889.84

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Solution

The fourth proportional to 6,131.92, 8,458.64 and 3,889.84 is: 5,365.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,131.92 : 8,458.64 = 3,889.84 : x
  2. Step 2: Convert to fraction form
    6,131.92/8,458.64 = 3,889.84/x
  3. Step 3: Cross multiply
    6,131.92x = 8,458.64 × 3,889.84
  4. Step 4: Simplify right side
    6,131.92x = 32,902,736.77
  5. Step 5: Solve for x
    x = 32,902,736.77/6,131.92
  6. Step 6: Final answer
    x = 5,365.81

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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.