Home / 2,653.36-3,981.64-2,107.44

Finding the Fourth Proportional to 2,653.36, 3,981.64 and 2,107.44

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Solution

The fourth proportional to 2,653.36, 3,981.64 and 2,107.44 is: 3,162.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.36 : 3,981.64 = 2,107.44 : x
  2. Step 2: Convert to fraction form
    2,653.36/3,981.64 = 2,107.44/x
  3. Step 3: Cross multiply
    2,653.36x = 3,981.64 × 2,107.44
  4. Step 4: Simplify right side
    2,653.36x = 8,391,067.40
  5. Step 5: Solve for x
    x = 8,391,067.40/2,653.36
  6. Step 6: Final answer
    x = 3,162.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.