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Finding the Fourth Proportional to 8,636.56, 12,955.02 and 2,793.76

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Solution

The fourth proportional to 8,636.56, 12,955.02 and 2,793.76 is: 4,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.56 : 12,955.02 = 2,793.76 : x
  2. Step 2: Convert to fraction form
    8,636.56/12,955.02 = 2,793.76/x
  3. Step 3: Cross multiply
    8,636.56x = 12,955.02 × 2,793.76
  4. Step 4: Simplify right side
    8,636.56x = 36,193,216.68
  5. Step 5: Solve for x
    x = 36,193,216.68/8,636.56
  6. Step 6: Final answer
    x = 4,190.70

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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.