Home / 1,936.42-2,904.67-620.43

Finding the Fourth Proportional to 1,936.42, 2,904.67 and 620.43

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Solution

The fourth proportional to 1,936.42, 2,904.67 and 620.43 is: 930.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.42 : 2,904.67 = 620.43 : x
  2. Step 2: Convert to fraction form
    1,936.42/2,904.67 = 620.43/x
  3. Step 3: Cross multiply
    1,936.42x = 2,904.67 × 620.43
  4. Step 4: Simplify right side
    1,936.42x = 1,802,144.41
  5. Step 5: Solve for x
    x = 1,802,144.41/1,936.42
  6. Step 6: Final answer
    x = 930.66

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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.