Home / 1,940.46-2,909.79-623.97

Finding the Fourth Proportional to 1,940.46, 2,909.79 and 623.97

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Solution

The fourth proportional to 1,940.46, 2,909.79 and 623.97 is: 935.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.46 : 2,909.79 = 623.97 : x
  2. Step 2: Convert to fraction form
    1,940.46/2,909.79 = 623.97/x
  3. Step 3: Cross multiply
    1,940.46x = 2,909.79 × 623.97
  4. Step 4: Simplify right side
    1,940.46x = 1,815,616.11
  5. Step 5: Solve for x
    x = 1,815,616.11/1,940.46
  6. Step 6: Final answer
    x = 935.66

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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.