Home / 2,119.36-3,180.12-1,958.98

Finding the Fourth Proportional to 2,119.36, 3,180.12 and 1,958.98

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Solution

The fourth proportional to 2,119.36, 3,180.12 and 1,958.98 is: 2,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.36 : 3,180.12 = 1,958.98 : x
  2. Step 2: Convert to fraction form
    2,119.36/3,180.12 = 1,958.98/x
  3. Step 3: Cross multiply
    2,119.36x = 3,180.12 × 1,958.98
  4. Step 4: Simplify right side
    2,119.36x = 6,229,791.48
  5. Step 5: Solve for x
    x = 6,229,791.48/2,119.36
  6. Step 6: Final answer
    x = 2,939.47

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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.