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Finding the Fourth Proportional to 8,635.88, 12,951.95 and 3,089.61

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Solution

The fourth proportional to 8,635.88, 12,951.95 and 3,089.61 is: 4,633.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.88 : 12,951.95 = 3,089.61 : x
  2. Step 2: Convert to fraction form
    8,635.88/12,951.95 = 3,089.61/x
  3. Step 3: Cross multiply
    8,635.88x = 12,951.95 × 3,089.61
  4. Step 4: Simplify right side
    8,635.88x = 40,016,474.24
  5. Step 5: Solve for x
    x = 40,016,474.24/8,635.88
  6. Step 6: Final answer
    x = 4,633.75

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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.