Home / 4,112.76-6,169.86-1,920.36

Finding the Fourth Proportional to 4,112.76, 6,169.86 and 1,920.36

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Solution

The fourth proportional to 4,112.76, 6,169.86 and 1,920.36 is: 2,880.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.76 : 6,169.86 = 1,920.36 : x
  2. Step 2: Convert to fraction form
    4,112.76/6,169.86 = 1,920.36/x
  3. Step 3: Cross multiply
    4,112.76x = 6,169.86 × 1,920.36
  4. Step 4: Simplify right side
    4,112.76x = 11,848,352.35
  5. Step 5: Solve for x
    x = 11,848,352.35/4,112.76
  6. Step 6: Final answer
    x = 2,880.88

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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.