Home / 3,881.89-5,361.81-2,817.95

Finding the Fourth Proportional to 3,881.89, 5,361.81 and 2,817.95

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Solution

The fourth proportional to 3,881.89, 5,361.81 and 2,817.95 is: 3,892.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.89 : 5,361.81 = 2,817.95 : x
  2. Step 2: Convert to fraction form
    3,881.89/5,361.81 = 2,817.95/x
  3. Step 3: Cross multiply
    3,881.89x = 5,361.81 × 2,817.95
  4. Step 4: Simplify right side
    3,881.89x = 15,109,312.49
  5. Step 5: Solve for x
    x = 15,109,312.49/3,881.89
  6. Step 6: Final answer
    x = 3,892.26

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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.