Home / 1,418.27-2,127.36-725.23

Finding the Fourth Proportional to 1,418.27, 2,127.36 and 725.23

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Solution

The fourth proportional to 1,418.27, 2,127.36 and 725.23 is: 1,087.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.27 : 2,127.36 = 725.23 : x
  2. Step 2: Convert to fraction form
    1,418.27/2,127.36 = 725.23/x
  3. Step 3: Cross multiply
    1,418.27x = 2,127.36 × 725.23
  4. Step 4: Simplify right side
    1,418.27x = 1,542,814.66
  5. Step 5: Solve for x
    x = 1,542,814.66/1,418.27
  6. Step 6: Final answer
    x = 1,087.81

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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.