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Finding the Fourth Proportional to 5,311.54, 7,329.82 and 2,921.41

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Solution

The fourth proportional to 5,311.54, 7,329.82 and 2,921.41 is: 4,031.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.54 : 7,329.82 = 2,921.41 : x
  2. Step 2: Convert to fraction form
    5,311.54/7,329.82 = 2,921.41/x
  3. Step 3: Cross multiply
    5,311.54x = 7,329.82 × 2,921.41
  4. Step 4: Simplify right side
    5,311.54x = 21,413,409.45
  5. Step 5: Solve for x
    x = 21,413,409.45/5,311.54
  6. Step 6: Final answer
    x = 4,031.49

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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.