Home / 2,156.92-3,218-1,949.32

Finding the Fourth Proportional to 2,156.92, 3,218 and 1,949.32

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Solution

The fourth proportional to 2,156.92, 3,218 and 1,949.32 is: 2,908.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.92 : 3,218 = 1,949.32 : x
  2. Step 2: Convert to fraction form
    2,156.92/3,218 = 1,949.32/x
  3. Step 3: Cross multiply
    2,156.92x = 3,218 × 1,949.32
  4. Step 4: Simplify right side
    2,156.92x = 6,272,911.76
  5. Step 5: Solve for x
    x = 6,272,911.76/2,156.92
  6. Step 6: Final answer
    x = 2,908.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.