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Finding the Fourth Proportional to 8,286.92, 12,401.58 and 6,788.84

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Solution

The fourth proportional to 8,286.92, 12,401.58 and 6,788.84 is: 10,159.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.92 : 12,401.58 = 6,788.84 : x
  2. Step 2: Convert to fraction form
    8,286.92/12,401.58 = 6,788.84/x
  3. Step 3: Cross multiply
    8,286.92x = 12,401.58 × 6,788.84
  4. Step 4: Simplify right side
    8,286.92x = 84,192,342.37
  5. Step 5: Solve for x
    x = 84,192,342.37/8,286.92
  6. Step 6: Final answer
    x = 10,159.67

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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.