Home / 2,218.87-3,326.05-1,439.36

Finding the Fourth Proportional to 2,218.87, 3,326.05 and 1,439.36

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Solution

The fourth proportional to 2,218.87, 3,326.05 and 1,439.36 is: 2,157.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.87 : 3,326.05 = 1,439.36 : x
  2. Step 2: Convert to fraction form
    2,218.87/3,326.05 = 1,439.36/x
  3. Step 3: Cross multiply
    2,218.87x = 3,326.05 × 1,439.36
  4. Step 4: Simplify right side
    2,218.87x = 4,787,391.64
  5. Step 5: Solve for x
    x = 4,787,391.64/2,218.87
  6. Step 6: Final answer
    x = 2,157.59

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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.