Home / 8,107.86-12,156.66-3,425.46

Finding the Fourth Proportional to 8,107.86, 12,156.66 and 3,425.46

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Solution

The fourth proportional to 8,107.86, 12,156.66 and 3,425.46 is: 5,136.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.86 : 12,156.66 = 3,425.46 : x
  2. Step 2: Convert to fraction form
    8,107.86/12,156.66 = 3,425.46/x
  3. Step 3: Cross multiply
    8,107.86x = 12,156.66 × 3,425.46
  4. Step 4: Simplify right side
    8,107.86x = 41,642,152.56
  5. Step 5: Solve for x
    x = 41,642,152.56/8,107.86
  6. Step 6: Final answer
    x = 5,136.02

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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.