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Finding the Fourth Proportional to 5,321.56, 7,983.31 and 2,199.87

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Solution

The fourth proportional to 5,321.56, 7,983.31 and 2,199.87 is: 3,300.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.56 : 7,983.31 = 2,199.87 : x
  2. Step 2: Convert to fraction form
    5,321.56/7,983.31 = 2,199.87/x
  3. Step 3: Cross multiply
    5,321.56x = 7,983.31 × 2,199.87
  4. Step 4: Simplify right side
    5,321.56x = 17,562,269.37
  5. Step 5: Solve for x
    x = 17,562,269.37/5,321.56
  6. Step 6: Final answer
    x = 3,300.21

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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.