Home / 1,628.21-2,442.29-395.61

Finding the Fourth Proportional to 1,628.21, 2,442.29 and 395.61

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Solution

The fourth proportional to 1,628.21, 2,442.29 and 395.61 is: 593.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.21 : 2,442.29 = 395.61 : x
  2. Step 2: Convert to fraction form
    1,628.21/2,442.29 = 395.61/x
  3. Step 3: Cross multiply
    1,628.21x = 2,442.29 × 395.61
  4. Step 4: Simplify right side
    1,628.21x = 966,192.37
  5. Step 5: Solve for x
    x = 966,192.37/1,628.21
  6. Step 6: Final answer
    x = 593.41

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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.