Home / 8,826.20-13,235.70-2,979.80

Finding the Fourth Proportional to 8,826.20, 13,235.70 and 2,979.80

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Solution

The fourth proportional to 8,826.20, 13,235.70 and 2,979.80 is: 4,468.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,826.20 : 13,235.70 = 2,979.80 : x
  2. Step 2: Convert to fraction form
    8,826.20/13,235.70 = 2,979.80/x
  3. Step 3: Cross multiply
    8,826.20x = 13,235.70 × 2,979.80
  4. Step 4: Simplify right side
    8,826.20x = 39,439,738.86
  5. Step 5: Solve for x
    x = 39,439,738.86/8,826.20
  6. Step 6: Final answer
    x = 4,468.48

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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.