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Finding the Fourth Proportional to 8,125.95, 12,190.22 and 3,445.98

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Solution

The fourth proportional to 8,125.95, 12,190.22 and 3,445.98 is: 5,169.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.95 : 12,190.22 = 3,445.98 : x
  2. Step 2: Convert to fraction form
    8,125.95/12,190.22 = 3,445.98/x
  3. Step 3: Cross multiply
    8,125.95x = 12,190.22 × 3,445.98
  4. Step 4: Simplify right side
    8,125.95x = 42,007,237.09
  5. Step 5: Solve for x
    x = 42,007,237.09/8,125.95
  6. Step 6: Final answer
    x = 5,169.52

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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.