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Finding the Fourth Proportional to 8,636.63, 12,956.36 and 2,792.07

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Solution

The fourth proportional to 8,636.63, 12,956.36 and 2,792.07 is: 4,188.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.63 : 12,956.36 = 2,792.07 : x
  2. Step 2: Convert to fraction form
    8,636.63/12,956.36 = 2,792.07/x
  3. Step 3: Cross multiply
    8,636.63x = 12,956.36 × 2,792.07
  4. Step 4: Simplify right side
    8,636.63x = 36,175,050.10
  5. Step 5: Solve for x
    x = 36,175,050.10/8,636.63
  6. Step 6: Final answer
    x = 4,188.56

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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.