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Finding the Fourth Proportional to 5,384.56, 7,431.84 and 3,146.44

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Solution

The fourth proportional to 5,384.56, 7,431.84 and 3,146.44 is: 4,342.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.56 : 7,431.84 = 3,146.44 : x
  2. Step 2: Convert to fraction form
    5,384.56/7,431.84 = 3,146.44/x
  3. Step 3: Cross multiply
    5,384.56x = 7,431.84 × 3,146.44
  4. Step 4: Simplify right side
    5,384.56x = 23,383,838.65
  5. Step 5: Solve for x
    x = 23,383,838.65/5,384.56
  6. Step 6: Final answer
    x = 4,342.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.