Home / 7,977.43-11,007.16-4,620.79

Finding the Fourth Proportional to 7,977.43, 11,007.16 and 4,620.79

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Solution

The fourth proportional to 7,977.43, 11,007.16 and 4,620.79 is: 6,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.43 : 11,007.16 = 4,620.79 : x
  2. Step 2: Convert to fraction form
    7,977.43/11,007.16 = 4,620.79/x
  3. Step 3: Cross multiply
    7,977.43x = 11,007.16 × 4,620.79
  4. Step 4: Simplify right side
    7,977.43x = 50,861,774.86
  5. Step 5: Solve for x
    x = 50,861,774.86/7,977.43
  6. Step 6: Final answer
    x = 6,375.71

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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.