Home / 2,109.80-3,149.97-1,902.44

Finding the Fourth Proportional to 2,109.80, 3,149.97 and 1,902.44

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Solution

The fourth proportional to 2,109.80, 3,149.97 and 1,902.44 is: 2,840.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.80 : 3,149.97 = 1,902.44 : x
  2. Step 2: Convert to fraction form
    2,109.80/3,149.97 = 1,902.44/x
  3. Step 3: Cross multiply
    2,109.80x = 3,149.97 × 1,902.44
  4. Step 4: Simplify right side
    2,109.80x = 5,992,628.93
  5. Step 5: Solve for x
    x = 5,992,628.93/2,109.80
  6. Step 6: Final answer
    x = 2,840.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.