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Finding the Fourth Proportional to 7,879.57, 11,819.69 and 2,332.79

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Solution

The fourth proportional to 7,879.57, 11,819.69 and 2,332.79 is: 3,499.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.57 : 11,819.69 = 2,332.79 : x
  2. Step 2: Convert to fraction form
    7,879.57/11,819.69 = 2,332.79/x
  3. Step 3: Cross multiply
    7,879.57x = 11,819.69 × 2,332.79
  4. Step 4: Simplify right side
    7,879.57x = 27,572,836.94
  5. Step 5: Solve for x
    x = 27,572,836.94/7,879.57
  6. Step 6: Final answer
    x = 3,499.28

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1.5x scale

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.