Home / 6,391.45-9,585.28-2,879.43

Finding the Fourth Proportional to 6,391.45, 9,585.28 and 2,879.43

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Solution

The fourth proportional to 6,391.45, 9,585.28 and 2,879.43 is: 4,318.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.45 : 9,585.28 = 2,879.43 : x
  2. Step 2: Convert to fraction form
    6,391.45/9,585.28 = 2,879.43/x
  3. Step 3: Cross multiply
    6,391.45x = 9,585.28 × 2,879.43
  4. Step 4: Simplify right side
    6,391.45x = 27,600,142.79
  5. Step 5: Solve for x
    x = 27,600,142.79/6,391.45
  6. Step 6: Final answer
    x = 4,318.29

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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.