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Finding the Fourth Proportional to 7,916.76, 11,874.96 and 2,072.88

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Solution

The fourth proportional to 7,916.76, 11,874.96 and 2,072.88 is: 3,109.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.76 : 11,874.96 = 2,072.88 : x
  2. Step 2: Convert to fraction form
    7,916.76/11,874.96 = 2,072.88/x
  3. Step 3: Cross multiply
    7,916.76x = 11,874.96 × 2,072.88
  4. Step 4: Simplify right side
    7,916.76x = 24,615,367.08
  5. Step 5: Solve for x
    x = 24,615,367.08/7,916.76
  6. Step 6: Final answer
    x = 3,109.27

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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.