Home / 9,008.20-13,505.10-3,809.80

Finding the Fourth Proportional to 9,008.20, 13,505.10 and 3,809.80

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Solution

The fourth proportional to 9,008.20, 13,505.10 and 3,809.80 is: 5,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,008.20 : 13,505.10 = 3,809.80 : x
  2. Step 2: Convert to fraction form
    9,008.20/13,505.10 = 3,809.80/x
  3. Step 3: Cross multiply
    9,008.20x = 13,505.10 × 3,809.80
  4. Step 4: Simplify right side
    9,008.20x = 51,451,729.98
  5. Step 5: Solve for x
    x = 51,451,729.98/9,008.20
  6. Step 6: Final answer
    x = 5,711.65

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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.