Home / 7,321.89-10,983.03-2,127.75

Finding the Fourth Proportional to 7,321.89, 10,983.03 and 2,127.75

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Solution

The fourth proportional to 7,321.89, 10,983.03 and 2,127.75 is: 3,191.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.89 : 10,983.03 = 2,127.75 : x
  2. Step 2: Convert to fraction form
    7,321.89/10,983.03 = 2,127.75/x
  3. Step 3: Cross multiply
    7,321.89x = 10,983.03 × 2,127.75
  4. Step 4: Simplify right side
    7,321.89x = 23,369,142.08
  5. Step 5: Solve for x
    x = 23,369,142.08/7,321.89
  6. Step 6: Final answer
    x = 3,191.68

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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.