Home / 1,619.21-2,428.97-449.29

Finding the Fourth Proportional to 1,619.21, 2,428.97 and 449.29

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Solution

The fourth proportional to 1,619.21, 2,428.97 and 449.29 is: 673.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.21 : 2,428.97 = 449.29 : x
  2. Step 2: Convert to fraction form
    1,619.21/2,428.97 = 449.29/x
  3. Step 3: Cross multiply
    1,619.21x = 2,428.97 × 449.29
  4. Step 4: Simplify right side
    1,619.21x = 1,091,303.61
  5. Step 5: Solve for x
    x = 1,091,303.61/1,619.21
  6. Step 6: Final answer
    x = 673.97

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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.