Home / 1,959.21-2,939.55-1,179.75

Finding the Fourth Proportional to 1,959.21, 2,939.55 and 1,179.75

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Solution

The fourth proportional to 1,959.21, 2,939.55 and 1,179.75 is: 1,770.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.21 : 2,939.55 = 1,179.75 : x
  2. Step 2: Convert to fraction form
    1,959.21/2,939.55 = 1,179.75/x
  3. Step 3: Cross multiply
    1,959.21x = 2,939.55 × 1,179.75
  4. Step 4: Simplify right side
    1,959.21x = 3,467,934.11
  5. Step 5: Solve for x
    x = 3,467,934.11/1,959.21
  6. Step 6: Final answer
    x = 1,770.07

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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.