Home / 8,198.48-11,311.20-4,660.40

Finding the Fourth Proportional to 8,198.48, 11,311.20 and 4,660.40

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Solution

The fourth proportional to 8,198.48, 11,311.20 and 4,660.40 is: 6,429.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,198.48 : 11,311.20 = 4,660.40 : x
  2. Step 2: Convert to fraction form
    8,198.48/11,311.20 = 4,660.40/x
  3. Step 3: Cross multiply
    8,198.48x = 11,311.20 × 4,660.40
  4. Step 4: Simplify right side
    8,198.48x = 52,714,716.48
  5. Step 5: Solve for x
    x = 52,714,716.48/8,198.48
  6. Step 6: Final answer
    x = 6,429.82

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1.5x scale

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.