Home / 8,084.66-11,150.82-7,138.79

Finding the Fourth Proportional to 8,084.66, 11,150.82 and 7,138.79

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Solution

The fourth proportional to 8,084.66, 11,150.82 and 7,138.79 is: 9,846.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,084.66 : 11,150.82 = 7,138.79 : x
  2. Step 2: Convert to fraction form
    8,084.66/11,150.82 = 7,138.79/x
  3. Step 3: Cross multiply
    8,084.66x = 11,150.82 × 7,138.79
  4. Step 4: Simplify right side
    8,084.66x = 79,603,306.55
  5. Step 5: Solve for x
    x = 79,603,306.55/8,084.66
  6. Step 6: Final answer
    x = 9,846.21

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.