Home / 2,821.98-3,895.11-1,939.98

Finding the Fourth Proportional to 2,821.98, 3,895.11 and 1,939.98

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Solution

The fourth proportional to 2,821.98, 3,895.11 and 1,939.98 is: 2,677.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.98 : 3,895.11 = 1,939.98 : x
  2. Step 2: Convert to fraction form
    2,821.98/3,895.11 = 1,939.98/x
  3. Step 3: Cross multiply
    2,821.98x = 3,895.11 × 1,939.98
  4. Step 4: Simplify right side
    2,821.98x = 7,556,435.50
  5. Step 5: Solve for x
    x = 7,556,435.50/2,821.98
  6. Step 6: Final answer
    x = 2,677.71

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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.