Home / 8,769.71-13,146.78-3,221.75

Finding the Fourth Proportional to 8,769.71, 13,146.78 and 3,221.75

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Solution

The fourth proportional to 8,769.71, 13,146.78 and 3,221.75 is: 4,829.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,769.71 : 13,146.78 = 3,221.75 : x
  2. Step 2: Convert to fraction form
    8,769.71/13,146.78 = 3,221.75/x
  3. Step 3: Cross multiply
    8,769.71x = 13,146.78 × 3,221.75
  4. Step 4: Simplify right side
    8,769.71x = 42,355,659.25
  5. Step 5: Solve for x
    x = 42,355,659.25/8,769.71
  6. Step 6: Final answer
    x = 4,829.77

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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.