Home / 1,960.10-2,939.96-1,219.85

Finding the Fourth Proportional to 1,960.10, 2,939.96 and 1,219.85

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Solution

The fourth proportional to 1,960.10, 2,939.96 and 1,219.85 is: 1,829.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.10 : 2,939.96 = 1,219.85 : x
  2. Step 2: Convert to fraction form
    1,960.10/2,939.96 = 1,219.85/x
  3. Step 3: Cross multiply
    1,960.10x = 2,939.96 × 1,219.85
  4. Step 4: Simplify right side
    1,960.10x = 3,586,289.41
  5. Step 5: Solve for x
    x = 3,586,289.41/1,960.10
  6. Step 6: Final answer
    x = 1,829.65

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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.