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Finding the Fourth Proportional to 2,219.50, 3,329.44 and 738.41

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Solution

The fourth proportional to 2,219.50, 3,329.44 and 738.41 is: 1,107.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.50 : 3,329.44 = 738.41 : x
  2. Step 2: Convert to fraction form
    2,219.50/3,329.44 = 738.41/x
  3. Step 3: Cross multiply
    2,219.50x = 3,329.44 × 738.41
  4. Step 4: Simplify right side
    2,219.50x = 2,458,491.79
  5. Step 5: Solve for x
    x = 2,458,491.79/2,219.50
  6. Step 6: Final answer
    x = 1,107.68

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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.