Home / 2,789.88-4,186.40-2,569.56

Finding the Fourth Proportional to 2,789.88, 4,186.40 and 2,569.56

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Solution

The fourth proportional to 2,789.88, 4,186.40 and 2,569.56 is: 3,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.88 : 4,186.40 = 2,569.56 : x
  2. Step 2: Convert to fraction form
    2,789.88/4,186.40 = 2,569.56/x
  3. Step 3: Cross multiply
    2,789.88x = 4,186.40 × 2,569.56
  4. Step 4: Simplify right side
    2,789.88x = 10,757,205.98
  5. Step 5: Solve for x
    x = 10,757,205.98/2,789.88
  6. Step 6: Final answer
    x = 3,855.80

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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.