Home / 1,963.26-2,709.18-1,078.88

Finding the Fourth Proportional to 1,963.26, 2,709.18 and 1,078.88

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Solution

The fourth proportional to 1,963.26, 2,709.18 and 1,078.88 is: 1,488.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.26 : 2,709.18 = 1,078.88 : x
  2. Step 2: Convert to fraction form
    1,963.26/2,709.18 = 1,078.88/x
  3. Step 3: Cross multiply
    1,963.26x = 2,709.18 × 1,078.88
  4. Step 4: Simplify right side
    1,963.26x = 2,922,880.12
  5. Step 5: Solve for x
    x = 2,922,880.12/1,963.26
  6. Step 6: Final answer
    x = 1,488.79

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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.