Home / 1,239.27-1,855.97-1,076.07

Finding the Fourth Proportional to 1,239.27, 1,855.97 and 1,076.07

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Solution

The fourth proportional to 1,239.27, 1,855.97 and 1,076.07 is: 1,611.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239.27 : 1,855.97 = 1,076.07 : x
  2. Step 2: Convert to fraction form
    1,239.27/1,855.97 = 1,076.07/x
  3. Step 3: Cross multiply
    1,239.27x = 1,855.97 × 1,076.07
  4. Step 4: Simplify right side
    1,239.27x = 1,997,148.26
  5. Step 5: Solve for x
    x = 1,997,148.26/1,239.27
  6. Step 6: Final answer
    x = 1,611.55

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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.