Home / 2,219.81-3,326.63-1,396.60

Finding the Fourth Proportional to 2,219.81, 3,326.63 and 1,396.60

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Solution

The fourth proportional to 2,219.81, 3,326.63 and 1,396.60 is: 2,092.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.81 : 3,326.63 = 1,396.60 : x
  2. Step 2: Convert to fraction form
    2,219.81/3,326.63 = 1,396.60/x
  3. Step 3: Cross multiply
    2,219.81x = 3,326.63 × 1,396.60
  4. Step 4: Simplify right side
    2,219.81x = 4,645,989.37
  5. Step 5: Solve for x
    x = 4,645,989.37/2,219.81
  6. Step 6: Final answer
    x = 2,092.97

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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.