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Finding the Fourth Proportional to 2,205.90, 3,044.07 and 1,211.22

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Solution

The fourth proportional to 2,205.90, 3,044.07 and 1,211.22 is: 1,671.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.90 : 3,044.07 = 1,211.22 : x
  2. Step 2: Convert to fraction form
    2,205.90/3,044.07 = 1,211.22/x
  3. Step 3: Cross multiply
    2,205.90x = 3,044.07 × 1,211.22
  4. Step 4: Simplify right side
    2,205.90x = 3,687,038.47
  5. Step 5: Solve for x
    x = 3,687,038.47/2,205.90
  6. Step 6: Final answer
    x = 1,671.44

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.