Home / 3,905.73-5,389.90-2,137.32

Finding the Fourth Proportional to 3,905.73, 5,389.90 and 2,137.32

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Solution

The fourth proportional to 3,905.73, 5,389.90 and 2,137.32 is: 2,949.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.73 : 5,389.90 = 2,137.32 : x
  2. Step 2: Convert to fraction form
    3,905.73/5,389.90 = 2,137.32/x
  3. Step 3: Cross multiply
    3,905.73x = 5,389.90 × 2,137.32
  4. Step 4: Simplify right side
    3,905.73x = 11,519,935.72
  5. Step 5: Solve for x
    x = 11,519,935.72/3,905.73
  6. Step 6: Final answer
    x = 2,949.50

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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.