Home / 2,120.25-3,180.49-2,003.38

Finding the Fourth Proportional to 2,120.25, 3,180.49 and 2,003.38

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Solution

The fourth proportional to 2,120.25, 3,180.49 and 2,003.38 is: 3,005.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.25 : 3,180.49 = 2,003.38 : x
  2. Step 2: Convert to fraction form
    2,120.25/3,180.49 = 2,003.38/x
  3. Step 3: Cross multiply
    2,120.25x = 3,180.49 × 2,003.38
  4. Step 4: Simplify right side
    2,120.25x = 6,371,740.62
  5. Step 5: Solve for x
    x = 6,371,740.62/2,120.25
  6. Step 6: Final answer
    x = 3,005.18

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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.