Home / 6,609.86-9,121.31-3,958.73

Finding the Fourth Proportional to 6,609.86, 9,121.31 and 3,958.73

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Solution

The fourth proportional to 6,609.86, 9,121.31 and 3,958.73 is: 5,462.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.86 : 9,121.31 = 3,958.73 : x
  2. Step 2: Convert to fraction form
    6,609.86/9,121.31 = 3,958.73/x
  3. Step 3: Cross multiply
    6,609.86x = 9,121.31 × 3,958.73
  4. Step 4: Simplify right side
    6,609.86x = 36,108,787.19
  5. Step 5: Solve for x
    x = 36,108,787.19/6,609.86
  6. Step 6: Final answer
    x = 5,462.87

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1.5x scale

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.