Home / 7,939.91-11,907.07-3,258.56

Finding the Fourth Proportional to 7,939.91, 11,907.07 and 3,258.56

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Solution

The fourth proportional to 7,939.91, 11,907.07 and 3,258.56 is: 4,886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.91 : 11,907.07 = 3,258.56 : x
  2. Step 2: Convert to fraction form
    7,939.91/11,907.07 = 3,258.56/x
  3. Step 3: Cross multiply
    7,939.91x = 11,907.07 × 3,258.56
  4. Step 4: Simplify right side
    7,939.91x = 38,799,902.02
  5. Step 5: Solve for x
    x = 38,799,902.02/7,939.91
  6. Step 6: Final answer
    x = 4,886.69

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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.