Home / 2,219.21-3,324.71-1,120.95

Finding the Fourth Proportional to 2,219.21, 3,324.71 and 1,120.95

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Solution

The fourth proportional to 2,219.21, 3,324.71 and 1,120.95 is: 1,679.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.21 : 3,324.71 = 1,120.95 : x
  2. Step 2: Convert to fraction form
    2,219.21/3,324.71 = 1,120.95/x
  3. Step 3: Cross multiply
    2,219.21x = 3,324.71 × 1,120.95
  4. Step 4: Simplify right side
    2,219.21x = 3,726,836.48
  5. Step 5: Solve for x
    x = 3,726,836.48/2,219.21
  6. Step 6: Final answer
    x = 1,679.35

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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.