Home / 3,620.40-5,437.20-3,166.80

Finding the Fourth Proportional to 3,620.40, 5,437.20 and 3,166.80

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Solution

The fourth proportional to 3,620.40, 5,437.20 and 3,166.80 is: 4,755.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.40 : 5,437.20 = 3,166.80 : x
  2. Step 2: Convert to fraction form
    3,620.40/5,437.20 = 3,166.80/x
  3. Step 3: Cross multiply
    3,620.40x = 5,437.20 × 3,166.80
  4. Step 4: Simplify right side
    3,620.40x = 17,218,524.96
  5. Step 5: Solve for x
    x = 17,218,524.96/3,620.40
  6. Step 6: Final answer
    x = 4,755.97

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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.