Home / 1,961.36-2,940.20-1,345.35

Finding the Fourth Proportional to 1,961.36, 2,940.20 and 1,345.35

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Solution

The fourth proportional to 1,961.36, 2,940.20 and 1,345.35 is: 2,016.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.36 : 2,940.20 = 1,345.35 : x
  2. Step 2: Convert to fraction form
    1,961.36/2,940.20 = 1,345.35/x
  3. Step 3: Cross multiply
    1,961.36x = 2,940.20 × 1,345.35
  4. Step 4: Simplify right side
    1,961.36x = 3,955,591.34
  5. Step 5: Solve for x
    x = 3,955,591.34/1,961.36
  6. Step 6: Final answer
    x = 2,016.76

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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.