Home / 4,940.12-7,408.33-2,128.70

Finding the Fourth Proportional to 4,940.12, 7,408.33 and 2,128.70

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Solution

The fourth proportional to 4,940.12, 7,408.33 and 2,128.70 is: 3,192.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,940.12 : 7,408.33 = 2,128.70 : x
  2. Step 2: Convert to fraction form
    4,940.12/7,408.33 = 2,128.70/x
  3. Step 3: Cross multiply
    4,940.12x = 7,408.33 × 2,128.70
  4. Step 4: Simplify right side
    4,940.12x = 15,770,125.27
  5. Step 5: Solve for x
    x = 15,770,125.27/4,940.12
  6. Step 6: Final answer
    x = 3,192.25

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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.