Home / 7,680.28-11,519.97-2,485.75

Finding the Fourth Proportional to 7,680.28, 11,519.97 and 2,485.75

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Solution

The fourth proportional to 7,680.28, 11,519.97 and 2,485.75 is: 3,728.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.28 : 11,519.97 = 2,485.75 : x
  2. Step 2: Convert to fraction form
    7,680.28/11,519.97 = 2,485.75/x
  3. Step 3: Cross multiply
    7,680.28x = 11,519.97 × 2,485.75
  4. Step 4: Simplify right side
    7,680.28x = 28,635,765.43
  5. Step 5: Solve for x
    x = 28,635,765.43/7,680.28
  6. Step 6: Final answer
    x = 3,728.48

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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.