Home / 6,390.20-9,589.96-3,272.81

Finding the Fourth Proportional to 6,390.20, 9,589.96 and 3,272.81

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Solution

The fourth proportional to 6,390.20, 9,589.96 and 3,272.81 is: 4,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.20 : 9,589.96 = 3,272.81 : x
  2. Step 2: Convert to fraction form
    6,390.20/9,589.96 = 3,272.81/x
  3. Step 3: Cross multiply
    6,390.20x = 9,589.96 × 3,272.81
  4. Step 4: Simplify right side
    6,390.20x = 31,386,100.62
  5. Step 5: Solve for x
    x = 31,386,100.62/6,390.20
  6. Step 6: Final answer
    x = 4,911.60

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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.