Home / 7,987.84-11,976.58-3,306.58

Finding the Fourth Proportional to 7,987.84, 11,976.58 and 3,306.58

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Solution

The fourth proportional to 7,987.84, 11,976.58 and 3,306.58 is: 4,957.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.84 : 11,976.58 = 3,306.58 : x
  2. Step 2: Convert to fraction form
    7,987.84/11,976.58 = 3,306.58/x
  3. Step 3: Cross multiply
    7,987.84x = 11,976.58 × 3,306.58
  4. Step 4: Simplify right side
    7,987.84x = 39,601,519.90
  5. Step 5: Solve for x
    x = 39,601,519.90/7,987.84
  6. Step 6: Final answer
    x = 4,957.73

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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.