Home / 3,799.56-5,243.46-2,121

Finding the Fourth Proportional to 3,799.56, 5,243.46 and 2,121

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Solution

The fourth proportional to 3,799.56, 5,243.46 and 2,121 is: 2,927.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,799.56 : 5,243.46 = 2,121 : x
  2. Step 2: Convert to fraction form
    3,799.56/5,243.46 = 2,121/x
  3. Step 3: Cross multiply
    3,799.56x = 5,243.46 × 2,121
  4. Step 4: Simplify right side
    3,799.56x = 11,121,378.66
  5. Step 5: Solve for x
    x = 11,121,378.66/3,799.56
  6. Step 6: Final answer
    x = 2,927.02

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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.