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Finding the Fourth Proportional to 8,636.90, 12,954.95 and 2,713.64

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Solution

The fourth proportional to 8,636.90, 12,954.95 and 2,713.64 is: 4,070.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.90 : 12,954.95 = 2,713.64 : x
  2. Step 2: Convert to fraction form
    8,636.90/12,954.95 = 2,713.64/x
  3. Step 3: Cross multiply
    8,636.90x = 12,954.95 × 2,713.64
  4. Step 4: Simplify right side
    8,636.90x = 35,155,017.62
  5. Step 5: Solve for x
    x = 35,155,017.62/8,636.90
  6. Step 6: Final answer
    x = 4,070.33

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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.