Home / 3,799.70-5,243.57-2,121.05

Finding the Fourth Proportional to 3,799.70, 5,243.57 and 2,121.05

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Solution

The fourth proportional to 3,799.70, 5,243.57 and 2,121.05 is: 2,927.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,799.70 : 5,243.57 = 2,121.05 : x
  2. Step 2: Convert to fraction form
    3,799.70/5,243.57 = 2,121.05/x
  3. Step 3: Cross multiply
    3,799.70x = 5,243.57 × 2,121.05
  4. Step 4: Simplify right side
    3,799.70x = 11,121,874.15
  5. Step 5: Solve for x
    x = 11,121,874.15/3,799.70
  6. Step 6: Final answer
    x = 2,927.04

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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.