Home / 6,390.45-9,585.10-2,229.75

Finding the Fourth Proportional to 6,390.45, 9,585.10 and 2,229.75

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Solution

The fourth proportional to 6,390.45, 9,585.10 and 2,229.75 is: 3,344.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.45 : 9,585.10 = 2,229.75 : x
  2. Step 2: Convert to fraction form
    6,390.45/9,585.10 = 2,229.75/x
  3. Step 3: Cross multiply
    6,390.45x = 9,585.10 × 2,229.75
  4. Step 4: Simplify right side
    6,390.45x = 21,372,376.73
  5. Step 5: Solve for x
    x = 21,372,376.73/6,390.45
  6. Step 6: Final answer
    x = 3,344.42

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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.