Home / 7,939.62-11,907.69-3,255.02

Finding the Fourth Proportional to 7,939.62, 11,907.69 and 3,255.02

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Solution

The fourth proportional to 7,939.62, 11,907.69 and 3,255.02 is: 4,881.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.62 : 11,907.69 = 3,255.02 : x
  2. Step 2: Convert to fraction form
    7,939.62/11,907.69 = 3,255.02/x
  3. Step 3: Cross multiply
    7,939.62x = 11,907.69 × 3,255.02
  4. Step 4: Simplify right side
    7,939.62x = 38,759,760.32
  5. Step 5: Solve for x
    x = 38,759,760.32/7,939.62
  6. Step 6: Final answer
    x = 4,881.82

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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.