Home / 8,086.14-12,129.21-2,539.89

Finding the Fourth Proportional to 8,086.14, 12,129.21 and 2,539.89

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Solution

The fourth proportional to 8,086.14, 12,129.21 and 2,539.89 is: 3,809.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,086.14 : 12,129.21 = 2,539.89 : x
  2. Step 2: Convert to fraction form
    8,086.14/12,129.21 = 2,539.89/x
  3. Step 3: Cross multiply
    8,086.14x = 12,129.21 × 2,539.89
  4. Step 4: Simplify right side
    8,086.14x = 30,806,859.19
  5. Step 5: Solve for x
    x = 30,806,859.19/8,086.14
  6. Step 6: Final answer
    x = 3,809.84

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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.