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Finding the Fourth Proportional to 8,591.85, 12,886.23 and 3,910.74

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Solution

The fourth proportional to 8,591.85, 12,886.23 and 3,910.74 is: 5,865.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.85 : 12,886.23 = 3,910.74 : x
  2. Step 2: Convert to fraction form
    8,591.85/12,886.23 = 3,910.74/x
  3. Step 3: Cross multiply
    8,591.85x = 12,886.23 × 3,910.74
  4. Step 4: Simplify right side
    8,591.85x = 50,394,695.11
  5. Step 5: Solve for x
    x = 50,394,695.11/8,591.85
  6. Step 6: Final answer
    x = 5,865.41

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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.