Home / 8,103.15-12,153.18-3,421.62

Finding the Fourth Proportional to 8,103.15, 12,153.18 and 3,421.62

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Solution

The fourth proportional to 8,103.15, 12,153.18 and 3,421.62 is: 5,131.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.15 : 12,153.18 = 3,421.62 : x
  2. Step 2: Convert to fraction form
    8,103.15/12,153.18 = 3,421.62/x
  3. Step 3: Cross multiply
    8,103.15x = 12,153.18 × 3,421.62
  4. Step 4: Simplify right side
    8,103.15x = 41,583,577.03
  5. Step 5: Solve for x
    x = 41,583,577.03/8,103.15
  6. Step 6: Final answer
    x = 5,131.78

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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.