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Finding the Fourth Proportional to 7,913.99, 11,872.29 and 3,531.29

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Solution

The fourth proportional to 7,913.99, 11,872.29 and 3,531.29 is: 5,297.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.99 : 11,872.29 = 3,531.29 : x
  2. Step 2: Convert to fraction form
    7,913.99/11,872.29 = 3,531.29/x
  3. Step 3: Cross multiply
    7,913.99x = 11,872.29 × 3,531.29
  4. Step 4: Simplify right side
    7,913.99x = 41,924,439.59
  5. Step 5: Solve for x
    x = 41,924,439.59/7,913.99
  6. Step 6: Final answer
    x = 5,297.51

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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.