Home / 7,975.28-11,962.97-2,781.16

Finding the Fourth Proportional to 7,975.28, 11,962.97 and 2,781.16

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Solution

The fourth proportional to 7,975.28, 11,962.97 and 2,781.16 is: 4,171.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,975.28 : 11,962.97 = 2,781.16 : x
  2. Step 2: Convert to fraction form
    7,975.28/11,962.97 = 2,781.16/x
  3. Step 3: Cross multiply
    7,975.28x = 11,962.97 × 2,781.16
  4. Step 4: Simplify right side
    7,975.28x = 33,270,933.65
  5. Step 5: Solve for x
    x = 33,270,933.65/7,975.28
  6. Step 6: Final answer
    x = 4,171.76

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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.