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Finding the Fourth Proportional to 5,490.32, 7,576.07 and 3,132

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Solution

The fourth proportional to 5,490.32, 7,576.07 and 3,132 is: 4,321.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.32 : 7,576.07 = 3,132 : x
  2. Step 2: Convert to fraction form
    5,490.32/7,576.07 = 3,132/x
  3. Step 3: Cross multiply
    5,490.32x = 7,576.07 × 3,132
  4. Step 4: Simplify right side
    5,490.32x = 23,728,235.58
  5. Step 5: Solve for x
    x = 23,728,235.58/5,490.32
  6. Step 6: Final answer
    x = 4,321.84

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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.