Home / 8,188.12-11,314.89-6,976.15

Finding the Fourth Proportional to 8,188.12, 11,314.89 and 6,976.15

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Solution

The fourth proportional to 8,188.12, 11,314.89 and 6,976.15 is: 9,640.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.12 : 11,314.89 = 6,976.15 : x
  2. Step 2: Convert to fraction form
    8,188.12/11,314.89 = 6,976.15/x
  3. Step 3: Cross multiply
    8,188.12x = 11,314.89 × 6,976.15
  4. Step 4: Simplify right side
    8,188.12x = 78,934,369.87
  5. Step 5: Solve for x
    x = 78,934,369.87/8,188.12
  6. Step 6: Final answer
    x = 9,640.11

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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.