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Finding the Fourth Proportional to 8,672.55, 13,008.83 and 8,125.80

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Solution

The fourth proportional to 8,672.55, 13,008.83 and 8,125.80 is: 12,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.55 : 13,008.83 = 8,125.80 : x
  2. Step 2: Convert to fraction form
    8,672.55/13,008.83 = 8,125.80/x
  3. Step 3: Cross multiply
    8,672.55x = 13,008.83 × 8,125.80
  4. Step 4: Simplify right side
    8,672.55x = 105,707,110.19
  5. Step 5: Solve for x
    x = 105,707,110.19/8,672.55
  6. Step 6: Final answer
    x = 12,188.70

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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.