Home / 2,205.89-3,044.13-1,211.21

Finding the Fourth Proportional to 2,205.89, 3,044.13 and 1,211.21

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Solution

The fourth proportional to 2,205.89, 3,044.13 and 1,211.21 is: 1,671.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.89 : 3,044.13 = 1,211.21 : x
  2. Step 2: Convert to fraction form
    2,205.89/3,044.13 = 1,211.21/x
  3. Step 3: Cross multiply
    2,205.89x = 3,044.13 × 1,211.21
  4. Step 4: Simplify right side
    2,205.89x = 3,687,080.70
  5. Step 5: Solve for x
    x = 3,687,080.70/2,205.89
  6. Step 6: Final answer
    x = 1,671.47

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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.