Home / 7,329.62-10,989.20-3,431.90

Finding the Fourth Proportional to 7,329.62, 10,989.20 and 3,431.90

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Solution

The fourth proportional to 7,329.62, 10,989.20 and 3,431.90 is: 5,145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,329.62 : 10,989.20 = 3,431.90 : x
  2. Step 2: Convert to fraction form
    7,329.62/10,989.20 = 3,431.90/x
  3. Step 3: Cross multiply
    7,329.62x = 10,989.20 × 3,431.90
  4. Step 4: Simplify right side
    7,329.62x = 37,713,789.11
  5. Step 5: Solve for x
    x = 37,713,789.11/7,329.62
  6. Step 6: Final answer
    x = 5,145.40

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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.