Home / 8,191.12-12,286.68-6,539.93

Finding the Fourth Proportional to 8,191.12, 12,286.68 and 6,539.93

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Solution

The fourth proportional to 8,191.12, 12,286.68 and 6,539.93 is: 9,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.12 : 12,286.68 = 6,539.93 : x
  2. Step 2: Convert to fraction form
    8,191.12/12,286.68 = 6,539.93/x
  3. Step 3: Cross multiply
    8,191.12x = 12,286.68 × 6,539.93
  4. Step 4: Simplify right side
    8,191.12x = 80,353,994.43
  5. Step 5: Solve for x
    x = 80,353,994.43/8,191.12
  6. Step 6: Final answer
    x = 9,809.90

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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.