Home / 1,639.47-2,458.30-664.44

Finding the Fourth Proportional to 1,639.47, 2,458.30 and 664.44

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Solution

The fourth proportional to 1,639.47, 2,458.30 and 664.44 is: 996.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.47 : 2,458.30 = 664.44 : x
  2. Step 2: Convert to fraction form
    1,639.47/2,458.30 = 664.44/x
  3. Step 3: Cross multiply
    1,639.47x = 2,458.30 × 664.44
  4. Step 4: Simplify right side
    1,639.47x = 1,633,392.85
  5. Step 5: Solve for x
    x = 1,633,392.85/1,639.47
  6. Step 6: Final answer
    x = 996.29

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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.