Home / 8,921.28-13,383.60-3,727.68

Finding the Fourth Proportional to 8,921.28, 13,383.60 and 3,727.68

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Solution

The fourth proportional to 8,921.28, 13,383.60 and 3,727.68 is: 5,592.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.28 : 13,383.60 = 3,727.68 : x
  2. Step 2: Convert to fraction form
    8,921.28/13,383.60 = 3,727.68/x
  3. Step 3: Cross multiply
    8,921.28x = 13,383.60 × 3,727.68
  4. Step 4: Simplify right side
    8,921.28x = 49,889,778.05
  5. Step 5: Solve for x
    x = 49,889,778.05/8,921.28
  6. Step 6: Final answer
    x = 5,592.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.