Home / 8,879.20-13,308.36-6,680.80

Finding the Fourth Proportional to 8,879.20, 13,308.36 and 6,680.80

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Solution

The fourth proportional to 8,879.20, 13,308.36 and 6,680.80 is: 10,013.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.20 : 13,308.36 = 6,680.80 : x
  2. Step 2: Convert to fraction form
    8,879.20/13,308.36 = 6,680.80/x
  3. Step 3: Cross multiply
    8,879.20x = 13,308.36 × 6,680.80
  4. Step 4: Simplify right side
    8,879.20x = 88,910,491.49
  5. Step 5: Solve for x
    x = 88,910,491.49/8,879.20
  6. Step 6: Final answer
    x = 10,013.34

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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.