Home / 2,107.95-3,163.74-1,378.41

Finding the Fourth Proportional to 2,107.95, 3,163.74 and 1,378.41

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Solution

The fourth proportional to 2,107.95, 3,163.74 and 1,378.41 is: 2,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.95 : 3,163.74 = 1,378.41 : x
  2. Step 2: Convert to fraction form
    2,107.95/3,163.74 = 1,378.41/x
  3. Step 3: Cross multiply
    2,107.95x = 3,163.74 × 1,378.41
  4. Step 4: Simplify right side
    2,107.95x = 4,360,930.85
  5. Step 5: Solve for x
    x = 4,360,930.85/2,107.95
  6. Step 6: Final answer
    x = 2,068.80

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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.