Home / 7,939.92-11,908.08-3,258.72

Finding the Fourth Proportional to 7,939.92, 11,908.08 and 3,258.72

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Solution

The fourth proportional to 7,939.92, 11,908.08 and 3,258.72 is: 4,887.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.92 : 11,908.08 = 3,258.72 : x
  2. Step 2: Convert to fraction form
    7,939.92/11,908.08 = 3,258.72/x
  3. Step 3: Cross multiply
    7,939.92x = 11,908.08 × 3,258.72
  4. Step 4: Simplify right side
    7,939.92x = 38,805,098.46
  5. Step 5: Solve for x
    x = 38,805,098.46/7,939.92
  6. Step 6: Final answer
    x = 4,887.34

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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.