Home / 8,190.75-12,286.13-2,718.75

Finding the Fourth Proportional to 8,190.75, 12,286.13 and 2,718.75

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Solution

The fourth proportional to 8,190.75, 12,286.13 and 2,718.75 is: 4,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.75 : 12,286.13 = 2,718.75 : x
  2. Step 2: Convert to fraction form
    8,190.75/12,286.13 = 2,718.75/x
  3. Step 3: Cross multiply
    8,190.75x = 12,286.13 × 2,718.75
  4. Step 4: Simplify right side
    8,190.75x = 33,402,902.34
  5. Step 5: Solve for x
    x = 33,402,902.34/8,190.75
  6. Step 6: Final answer
    x = 4,078.13

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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.