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Finding the Fourth Proportional to 8,103.90, 12,157.13 and 3,486.94

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Solution

The fourth proportional to 8,103.90, 12,157.13 and 3,486.94 is: 5,230.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.90 : 12,157.13 = 3,486.94 : x
  2. Step 2: Convert to fraction form
    8,103.90/12,157.13 = 3,486.94/x
  3. Step 3: Cross multiply
    8,103.90x = 12,157.13 × 3,486.94
  4. Step 4: Simplify right side
    8,103.90x = 42,391,182.88
  5. Step 5: Solve for x
    x = 42,391,182.88/8,103.90
  6. Step 6: Final answer
    x = 5,230.96

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.