Home / 3,939.62-5,436.06-2,261

Finding the Fourth Proportional to 3,939.62, 5,436.06 and 2,261

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Solution

The fourth proportional to 3,939.62, 5,436.06 and 2,261 is: 3,119.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.62 : 5,436.06 = 2,261 : x
  2. Step 2: Convert to fraction form
    3,939.62/5,436.06 = 2,261/x
  3. Step 3: Cross multiply
    3,939.62x = 5,436.06 × 2,261
  4. Step 4: Simplify right side
    3,939.62x = 12,290,931.66
  5. Step 5: Solve for x
    x = 12,290,931.66/3,939.62
  6. Step 6: Final answer
    x = 3,119.83

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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.