Home / 8,086.16-12,132.60-3,928.40

Finding the Fourth Proportional to 8,086.16, 12,132.60 and 3,928.40

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Solution

The fourth proportional to 8,086.16, 12,132.60 and 3,928.40 is: 5,894.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,086.16 : 12,132.60 = 3,928.40 : x
  2. Step 2: Convert to fraction form
    8,086.16/12,132.60 = 3,928.40/x
  3. Step 3: Cross multiply
    8,086.16x = 12,132.60 × 3,928.40
  4. Step 4: Simplify right side
    8,086.16x = 47,661,705.84
  5. Step 5: Solve for x
    x = 47,661,705.84/8,086.16
  6. Step 6: Final answer
    x = 5,894.23

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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.