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Finding the Fourth Proportional to 8,636.63, 12,956.84 and 2,793.16

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Solution

The fourth proportional to 8,636.63, 12,956.84 and 2,793.16 is: 4,190.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.63 : 12,956.84 = 2,793.16 : x
  2. Step 2: Convert to fraction form
    8,636.63/12,956.84 = 2,793.16/x
  3. Step 3: Cross multiply
    8,636.63x = 12,956.84 × 2,793.16
  4. Step 4: Simplify right side
    8,636.63x = 36,190,448.46
  5. Step 5: Solve for x
    x = 36,190,448.46/8,636.63
  6. Step 6: Final answer
    x = 4,190.34

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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.