Home / 3,799.89-5,243.85-2,121.39

Finding the Fourth Proportional to 3,799.89, 5,243.85 and 2,121.39

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Solution

The fourth proportional to 3,799.89, 5,243.85 and 2,121.39 is: 2,927.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,799.89 : 5,243.85 = 2,121.39 : x
  2. Step 2: Convert to fraction form
    3,799.89/5,243.85 = 2,121.39/x
  3. Step 3: Cross multiply
    3,799.89x = 5,243.85 × 2,121.39
  4. Step 4: Simplify right side
    3,799.89x = 11,124,250.95
  5. Step 5: Solve for x
    x = 11,124,250.95/3,799.89
  6. Step 6: Final answer
    x = 2,927.52

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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.