Home / 2,739.27-4,102.73-1,921.21

Finding the Fourth Proportional to 2,739.27, 4,102.73 and 1,921.21

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Solution

The fourth proportional to 2,739.27, 4,102.73 and 1,921.21 is: 2,877.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.27 : 4,102.73 = 1,921.21 : x
  2. Step 2: Convert to fraction form
    2,739.27/4,102.73 = 1,921.21/x
  3. Step 3: Cross multiply
    2,739.27x = 4,102.73 × 1,921.21
  4. Step 4: Simplify right side
    2,739.27x = 7,882,205.90
  5. Step 5: Solve for x
    x = 7,882,205.90/2,739.27
  6. Step 6: Final answer
    x = 2,877.48

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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.