Home / 4,212.15-6,305.75-3,121.41

Finding the Fourth Proportional to 4,212.15, 6,305.75 and 3,121.41

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Solution

The fourth proportional to 4,212.15, 6,305.75 and 3,121.41 is: 4,672.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.15 : 6,305.75 = 3,121.41 : x
  2. Step 2: Convert to fraction form
    4,212.15/6,305.75 = 3,121.41/x
  3. Step 3: Cross multiply
    4,212.15x = 6,305.75 × 3,121.41
  4. Step 4: Simplify right side
    4,212.15x = 19,682,815.50
  5. Step 5: Solve for x
    x = 19,682,815.50/4,212.15
  6. Step 6: Final answer
    x = 4,672.87

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1.5x scale

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.