Home / 3,685.70-5,518.82-2,222.84

Finding the Fourth Proportional to 3,685.70, 5,518.82 and 2,222.84

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Solution

The fourth proportional to 3,685.70, 5,518.82 and 2,222.84 is: 3,328.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.70 : 5,518.82 = 2,222.84 : x
  2. Step 2: Convert to fraction form
    3,685.70/5,518.82 = 2,222.84/x
  3. Step 3: Cross multiply
    3,685.70x = 5,518.82 × 2,222.84
  4. Step 4: Simplify right side
    3,685.70x = 12,267,453.85
  5. Step 5: Solve for x
    x = 12,267,453.85/3,685.70
  6. Step 6: Final answer
    x = 3,328.39

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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.