Home / 3,881.29-5,353.90-2,817.81

Finding the Fourth Proportional to 3,881.29, 5,353.90 and 2,817.81

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Solution

The fourth proportional to 3,881.29, 5,353.90 and 2,817.81 is: 3,886.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.29 : 5,353.90 = 2,817.81 : x
  2. Step 2: Convert to fraction form
    3,881.29/5,353.90 = 2,817.81/x
  3. Step 3: Cross multiply
    3,881.29x = 5,353.90 × 2,817.81
  4. Step 4: Simplify right side
    3,881.29x = 15,086,272.96
  5. Step 5: Solve for x
    x = 15,086,272.96/3,881.29
  6. Step 6: Final answer
    x = 3,886.92

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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.