Home / 3,881.03-5,355.84-2,112.65

Finding the Fourth Proportional to 3,881.03, 5,355.84 and 2,112.65

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Solution

The fourth proportional to 3,881.03, 5,355.84 and 2,112.65 is: 2,915.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.03 : 5,355.84 = 2,112.65 : x
  2. Step 2: Convert to fraction form
    3,881.03/5,355.84 = 2,112.65/x
  3. Step 3: Cross multiply
    3,881.03x = 5,355.84 × 2,112.65
  4. Step 4: Simplify right side
    3,881.03x = 11,315,028.77
  5. Step 5: Solve for x
    x = 11,315,028.77/3,881.03
  6. Step 6: Final answer
    x = 2,915.47

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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.