Home / 1,959.24-2,940.88-1,139.12

Finding the Fourth Proportional to 1,959.24, 2,940.88 and 1,139.12

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Solution

The fourth proportional to 1,959.24, 2,940.88 and 1,139.12 is: 1,709.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.24 : 2,940.88 = 1,139.12 : x
  2. Step 2: Convert to fraction form
    1,959.24/2,940.88 = 1,139.12/x
  3. Step 3: Cross multiply
    1,959.24x = 2,940.88 × 1,139.12
  4. Step 4: Simplify right side
    1,959.24x = 3,350,015.23
  5. Step 5: Solve for x
    x = 3,350,015.23/1,959.24
  6. Step 6: Final answer
    x = 1,709.85

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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.