Home / 8,103.09-12,156.32-3,423.11

Finding the Fourth Proportional to 8,103.09, 12,156.32 and 3,423.11

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Solution

The fourth proportional to 8,103.09, 12,156.32 and 3,423.11 is: 5,135.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.09 : 12,156.32 = 3,423.11 : x
  2. Step 2: Convert to fraction form
    8,103.09/12,156.32 = 3,423.11/x
  3. Step 3: Cross multiply
    8,103.09x = 12,156.32 × 3,423.11
  4. Step 4: Simplify right side
    8,103.09x = 41,612,420.56
  5. Step 5: Solve for x
    x = 41,612,420.56/8,103.09
  6. Step 6: Final answer
    x = 5,135.38

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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.