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Finding the Fourth Proportional to 8,536.47, 12,806.49 and 2,989.99

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Solution

The fourth proportional to 8,536.47, 12,806.49 and 2,989.99 is: 4,485.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,536.47 : 12,806.49 = 2,989.99 : x
  2. Step 2: Convert to fraction form
    8,536.47/12,806.49 = 2,989.99/x
  3. Step 3: Cross multiply
    8,536.47x = 12,806.49 × 2,989.99
  4. Step 4: Simplify right side
    8,536.47x = 38,291,287.44
  5. Step 5: Solve for x
    x = 38,291,287.44/8,536.47
  6. Step 6: Final answer
    x = 4,485.61

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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.