Home / 1,961.67-2,939.76-1,411.26

Finding the Fourth Proportional to 1,961.67, 2,939.76 and 1,411.26

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Solution

The fourth proportional to 1,961.67, 2,939.76 and 1,411.26 is: 2,114.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.67 : 2,939.76 = 1,411.26 : x
  2. Step 2: Convert to fraction form
    1,961.67/2,939.76 = 1,411.26/x
  3. Step 3: Cross multiply
    1,961.67x = 2,939.76 × 1,411.26
  4. Step 4: Simplify right side
    1,961.67x = 4,148,765.70
  5. Step 5: Solve for x
    x = 4,148,765.70/1,961.67
  6. Step 6: Final answer
    x = 2,114.92

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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.