Home / 3,815.91-5,266.17-2,137.32

Finding the Fourth Proportional to 3,815.91, 5,266.17 and 2,137.32

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Solution

The fourth proportional to 3,815.91, 5,266.17 and 2,137.32 is: 2,949.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.91 : 5,266.17 = 2,137.32 : x
  2. Step 2: Convert to fraction form
    3,815.91/5,266.17 = 2,137.32/x
  3. Step 3: Cross multiply
    3,815.91x = 5,266.17 × 2,137.32
  4. Step 4: Simplify right side
    3,815.91x = 11,255,490.46
  5. Step 5: Solve for x
    x = 11,255,490.46/3,815.91
  6. Step 6: Final answer
    x = 2,949.62

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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.