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Finding the Fourth Proportional to 5,283.72, 7,911 and 4,233.96

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Solution

The fourth proportional to 5,283.72, 7,911 and 4,233.96 is: 6,339.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,283.72 : 7,911 = 4,233.96 : x
  2. Step 2: Convert to fraction form
    5,283.72/7,911 = 4,233.96/x
  3. Step 3: Cross multiply
    5,283.72x = 7,911 × 4,233.96
  4. Step 4: Simplify right side
    5,283.72x = 33,494,857.56
  5. Step 5: Solve for x
    x = 33,494,857.56/5,283.72
  6. Step 6: Final answer
    x = 6,339.26

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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.