Home / 1,619.21-2,428.54-449.33

Finding the Fourth Proportional to 1,619.21, 2,428.54 and 449.33

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Solution

The fourth proportional to 1,619.21, 2,428.54 and 449.33 is: 673.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.21 : 2,428.54 = 449.33 : x
  2. Step 2: Convert to fraction form
    1,619.21/2,428.54 = 449.33/x
  3. Step 3: Cross multiply
    1,619.21x = 2,428.54 × 449.33
  4. Step 4: Simplify right side
    1,619.21x = 1,091,215.88
  5. Step 5: Solve for x
    x = 1,091,215.88/1,619.21
  6. Step 6: Final answer
    x = 673.92

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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.