Home / 2,939.90-4,405.79-1,294.38

Finding the Fourth Proportional to 2,939.90, 4,405.79 and 1,294.38

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Solution

The fourth proportional to 2,939.90, 4,405.79 and 1,294.38 is: 1,939.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.90 : 4,405.79 = 1,294.38 : x
  2. Step 2: Convert to fraction form
    2,939.90/4,405.79 = 1,294.38/x
  3. Step 3: Cross multiply
    2,939.90x = 4,405.79 × 1,294.38
  4. Step 4: Simplify right side
    2,939.90x = 5,702,769.70
  5. Step 5: Solve for x
    x = 5,702,769.70/2,939.90
  6. Step 6: Final answer
    x = 1,939.79

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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.