Home / 7,988.90-11,976.05-2,791.94

Finding the Fourth Proportional to 7,988.90, 11,976.05 and 2,791.94

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Solution

The fourth proportional to 7,988.90, 11,976.05 and 2,791.94 is: 4,185.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.90 : 11,976.05 = 2,791.94 : x
  2. Step 2: Convert to fraction form
    7,988.90/11,976.05 = 2,791.94/x
  3. Step 3: Cross multiply
    7,988.90x = 11,976.05 × 2,791.94
  4. Step 4: Simplify right side
    7,988.90x = 33,436,360.14
  5. Step 5: Solve for x
    x = 33,436,360.14/7,988.90
  6. Step 6: Final answer
    x = 4,185.35

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Similar ratio
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1.5x scale

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.