Home / 2,628.30-3,936.75-1,649.62

Finding the Fourth Proportional to 2,628.30, 3,936.75 and 1,649.62

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Solution

The fourth proportional to 2,628.30, 3,936.75 and 1,649.62 is: 2,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.30 : 3,936.75 = 1,649.62 : x
  2. Step 2: Convert to fraction form
    2,628.30/3,936.75 = 1,649.62/x
  3. Step 3: Cross multiply
    2,628.30x = 3,936.75 × 1,649.62
  4. Step 4: Simplify right side
    2,628.30x = 6,494,141.54
  5. Step 5: Solve for x
    x = 6,494,141.54/2,628.30
  6. Step 6: Final answer
    x = 2,470.85

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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.