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Finding the Fourth Proportional to 8,504.76, 12,756.24 and 5,212.11

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Solution

The fourth proportional to 8,504.76, 12,756.24 and 5,212.11 is: 7,817.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,504.76 : 12,756.24 = 5,212.11 : x
  2. Step 2: Convert to fraction form
    8,504.76/12,756.24 = 5,212.11/x
  3. Step 3: Cross multiply
    8,504.76x = 12,756.24 × 5,212.11
  4. Step 4: Simplify right side
    8,504.76x = 66,486,926.07
  5. Step 5: Solve for x
    x = 66,486,926.07/8,504.76
  6. Step 6: Final answer
    x = 7,817.61

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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.