Home / 3,881.92-5,357.14-2,113.62

Finding the Fourth Proportional to 3,881.92, 5,357.14 and 2,113.62

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Solution

The fourth proportional to 3,881.92, 5,357.14 and 2,113.62 is: 2,916.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.92 : 5,357.14 = 2,113.62 : x
  2. Step 2: Convert to fraction form
    3,881.92/5,357.14 = 2,113.62/x
  3. Step 3: Cross multiply
    3,881.92x = 5,357.14 × 2,113.62
  4. Step 4: Simplify right side
    3,881.92x = 11,322,954.19
  5. Step 5: Solve for x
    x = 11,322,954.19/3,881.92
  6. Step 6: Final answer
    x = 2,916.85

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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.