Home / 2,087.44-2,879.40-1,379.28

Finding the Fourth Proportional to 2,087.44, 2,879.40 and 1,379.28

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Solution

The fourth proportional to 2,087.44, 2,879.40 and 1,379.28 is: 1,902.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.44 : 2,879.40 = 1,379.28 : x
  2. Step 2: Convert to fraction form
    2,087.44/2,879.40 = 1,379.28/x
  3. Step 3: Cross multiply
    2,087.44x = 2,879.40 × 1,379.28
  4. Step 4: Simplify right side
    2,087.44x = 3,971,498.83
  5. Step 5: Solve for x
    x = 3,971,498.83/2,087.44
  6. Step 6: Final answer
    x = 1,902.57

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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.