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Finding the Fourth Proportional to 5,310.87, 7,329.19 and 2,921.03

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Solution

The fourth proportional to 5,310.87, 7,329.19 and 2,921.03 is: 4,031.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,310.87 : 7,329.19 = 2,921.03 : x
  2. Step 2: Convert to fraction form
    5,310.87/7,329.19 = 2,921.03/x
  3. Step 3: Cross multiply
    5,310.87x = 7,329.19 × 2,921.03
  4. Step 4: Simplify right side
    5,310.87x = 21,408,739.92
  5. Step 5: Solve for x
    x = 21,408,739.92/5,310.87
  6. Step 6: Final answer
    x = 4,031.12

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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.