Home / 1,961.47-2,945.45-1,305.37

Finding the Fourth Proportional to 1,961.47, 2,945.45 and 1,305.37

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Solution

The fourth proportional to 1,961.47, 2,945.45 and 1,305.37 is: 1,960.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.47 : 2,945.45 = 1,305.37 : x
  2. Step 2: Convert to fraction form
    1,961.47/2,945.45 = 1,305.37/x
  3. Step 3: Cross multiply
    1,961.47x = 2,945.45 × 1,305.37
  4. Step 4: Simplify right side
    1,961.47x = 3,844,902.07
  5. Step 5: Solve for x
    x = 3,844,902.07/1,961.47
  6. Step 6: Final answer
    x = 1,960.21

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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.