Home / 4,878.94-6,730.71-3,109.44

Finding the Fourth Proportional to 4,878.94, 6,730.71 and 3,109.44

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Solution

The fourth proportional to 4,878.94, 6,730.71 and 3,109.44 is: 4,289.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.94 : 6,730.71 = 3,109.44 : x
  2. Step 2: Convert to fraction form
    4,878.94/6,730.71 = 3,109.44/x
  3. Step 3: Cross multiply
    4,878.94x = 6,730.71 × 3,109.44
  4. Step 4: Simplify right side
    4,878.94x = 20,928,738.90
  5. Step 5: Solve for x
    x = 20,928,738.90/4,878.94
  6. Step 6: Final answer
    x = 4,289.61

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1.5x scale

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.