Home / 7,982.28-11,976.48-7,770.60

Finding the Fourth Proportional to 7,982.28, 11,976.48 and 7,770.60

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Solution

The fourth proportional to 7,982.28, 11,976.48 and 7,770.60 is: 11,658.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.28 : 11,976.48 = 7,770.60 : x
  2. Step 2: Convert to fraction form
    7,982.28/11,976.48 = 7,770.60/x
  3. Step 3: Cross multiply
    7,982.28x = 11,976.48 × 7,770.60
  4. Step 4: Simplify right side
    7,982.28x = 93,064,435.49
  5. Step 5: Solve for x
    x = 93,064,435.49/7,982.28
  6. Step 6: Final answer
    x = 11,658.88

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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.