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Finding the Fourth Proportional to 8,879.87, 13,318.37 and 2,960.88

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Solution

The fourth proportional to 8,879.87, 13,318.37 and 2,960.88 is: 4,440.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.87 : 13,318.37 = 2,960.88 : x
  2. Step 2: Convert to fraction form
    8,879.87/13,318.37 = 2,960.88/x
  3. Step 3: Cross multiply
    8,879.87x = 13,318.37 × 2,960.88
  4. Step 4: Simplify right side
    8,879.87x = 39,434,095.83
  5. Step 5: Solve for x
    x = 39,434,095.83/8,879.87
  6. Step 6: Final answer
    x = 4,440.84

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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.