Home / 3,078.59-4,619.39-1,908.28

Finding the Fourth Proportional to 3,078.59, 4,619.39 and 1,908.28

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Solution

The fourth proportional to 3,078.59, 4,619.39 and 1,908.28 is: 2,863.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.59 : 4,619.39 = 1,908.28 : x
  2. Step 2: Convert to fraction form
    3,078.59/4,619.39 = 1,908.28/x
  3. Step 3: Cross multiply
    3,078.59x = 4,619.39 × 1,908.28
  4. Step 4: Simplify right side
    3,078.59x = 8,815,089.55
  5. Step 5: Solve for x
    x = 8,815,089.55/3,078.59
  6. Step 6: Final answer
    x = 2,863.35

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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.