Home / 10,640.76-15,960.96-3,245.28

Finding the Fourth Proportional to 10,640.76, 15,960.96 and 3,245.28

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Solution

The fourth proportional to 10,640.76, 15,960.96 and 3,245.28 is: 4,867.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.76 : 15,960.96 = 3,245.28 : x
  2. Step 2: Convert to fraction form
    10,640.76/15,960.96 = 3,245.28/x
  3. Step 3: Cross multiply
    10,640.76x = 15,960.96 × 3,245.28
  4. Step 4: Simplify right side
    10,640.76x = 51,797,784.27
  5. Step 5: Solve for x
    x = 51,797,784.27/10,640.76
  6. Step 6: Final answer
    x = 4,867.87

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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.