Home / 3,908.89-5,858.34-1,961.65

Finding the Fourth Proportional to 3,908.89, 5,858.34 and 1,961.65

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Solution

The fourth proportional to 3,908.89, 5,858.34 and 1,961.65 is: 2,939.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.89 : 5,858.34 = 1,961.65 : x
  2. Step 2: Convert to fraction form
    3,908.89/5,858.34 = 1,961.65/x
  3. Step 3: Cross multiply
    3,908.89x = 5,858.34 × 1,961.65
  4. Step 4: Simplify right side
    3,908.89x = 11,492,012.66
  5. Step 5: Solve for x
    x = 11,492,012.66/3,908.89
  6. Step 6: Final answer
    x = 2,939.97

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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.