Home / 4,112.92-6,171.41-1,921.80

Finding the Fourth Proportional to 4,112.92, 6,171.41 and 1,921.80

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Solution

The fourth proportional to 4,112.92, 6,171.41 and 1,921.80 is: 2,883.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.92 : 6,171.41 = 1,921.80 : x
  2. Step 2: Convert to fraction form
    4,112.92/6,171.41 = 1,921.80/x
  3. Step 3: Cross multiply
    4,112.92x = 6,171.41 × 1,921.80
  4. Step 4: Simplify right side
    4,112.92x = 11,860,215.74
  5. Step 5: Solve for x
    x = 11,860,215.74/4,112.92
  6. Step 6: Final answer
    x = 2,883.65

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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.