Home / 8,129.61-12,194.91-2,286.72

Finding the Fourth Proportional to 8,129.61, 12,194.91 and 2,286.72

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Solution

The fourth proportional to 8,129.61, 12,194.91 and 2,286.72 is: 3,430.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.61 : 12,194.91 = 2,286.72 : x
  2. Step 2: Convert to fraction form
    8,129.61/12,194.91 = 2,286.72/x
  3. Step 3: Cross multiply
    8,129.61x = 12,194.91 × 2,286.72
  4. Step 4: Simplify right side
    8,129.61x = 27,886,344.60
  5. Step 5: Solve for x
    x = 27,886,344.60/8,129.61
  6. Step 6: Final answer
    x = 3,430.22

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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.