Home / 3,605.05-5,410.91-2,221.09

Finding the Fourth Proportional to 3,605.05, 5,410.91 and 2,221.09

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Solution

The fourth proportional to 3,605.05, 5,410.91 and 2,221.09 is: 3,333.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.05 : 5,410.91 = 2,221.09 : x
  2. Step 2: Convert to fraction form
    3,605.05/5,410.91 = 2,221.09/x
  3. Step 3: Cross multiply
    3,605.05x = 5,410.91 × 2,221.09
  4. Step 4: Simplify right side
    3,605.05x = 12,018,110.12
  5. Step 5: Solve for x
    x = 12,018,110.12/3,605.05
  6. Step 6: Final answer
    x = 3,333.69

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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.