Home / 9,120.45-13,680.68-2,194.95

Finding the Fourth Proportional to 9,120.45, 13,680.68 and 2,194.95

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Solution

The fourth proportional to 9,120.45, 13,680.68 and 2,194.95 is: 3,292.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.45 : 13,680.68 = 2,194.95 : x
  2. Step 2: Convert to fraction form
    9,120.45/13,680.68 = 2,194.95/x
  3. Step 3: Cross multiply
    9,120.45x = 13,680.68 × 2,194.95
  4. Step 4: Simplify right side
    9,120.45x = 30,028,371.94
  5. Step 5: Solve for x
    x = 30,028,371.94/9,120.45
  6. Step 6: Final answer
    x = 3,292.42

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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.