Home / 2,220.41-3,328.49-1,109.09

Finding the Fourth Proportional to 2,220.41, 3,328.49 and 1,109.09

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Solution

The fourth proportional to 2,220.41, 3,328.49 and 1,109.09 is: 1,662.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.41 : 3,328.49 = 1,109.09 : x
  2. Step 2: Convert to fraction form
    2,220.41/3,328.49 = 1,109.09/x
  3. Step 3: Cross multiply
    2,220.41x = 3,328.49 × 1,109.09
  4. Step 4: Simplify right side
    2,220.41x = 3,691,606.07
  5. Step 5: Solve for x
    x = 3,691,606.07/2,220.41
  6. Step 6: Final answer
    x = 1,662.58

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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.