Home / 8,286.91-12,423.98-3,900.15

Finding the Fourth Proportional to 8,286.91, 12,423.98 and 3,900.15

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Solution

The fourth proportional to 8,286.91, 12,423.98 and 3,900.15 is: 5,847.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.91 : 12,423.98 = 3,900.15 : x
  2. Step 2: Convert to fraction form
    8,286.91/12,423.98 = 3,900.15/x
  3. Step 3: Cross multiply
    8,286.91x = 12,423.98 × 3,900.15
  4. Step 4: Simplify right side
    8,286.91x = 48,455,395.35
  5. Step 5: Solve for x
    x = 48,455,395.35/8,286.91
  6. Step 6: Final answer
    x = 5,847.22

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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.