Home / 2,072.56-2,858.82-1,286.66

Finding the Fourth Proportional to 2,072.56, 2,858.82 and 1,286.66

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Solution

The fourth proportional to 2,072.56, 2,858.82 and 1,286.66 is: 1,774.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.56 : 2,858.82 = 1,286.66 : x
  2. Step 2: Convert to fraction form
    2,072.56/2,858.82 = 1,286.66/x
  3. Step 3: Cross multiply
    2,072.56x = 2,858.82 × 1,286.66
  4. Step 4: Simplify right side
    2,072.56x = 3,678,329.34
  5. Step 5: Solve for x
    x = 3,678,329.34/2,072.56
  6. Step 6: Final answer
    x = 1,774.78

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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.