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Finding the Fourth Proportional to 1,960.90, 2,936.07 and 1,345.82

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Solution

The fourth proportional to 1,960.90, 2,936.07 and 1,345.82 is: 2,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.90 : 2,936.07 = 1,345.82 : x
  2. Step 2: Convert to fraction form
    1,960.90/2,936.07 = 1,345.82/x
  3. Step 3: Cross multiply
    1,960.90x = 2,936.07 × 1,345.82
  4. Step 4: Simplify right side
    1,960.90x = 3,951,407.05
  5. Step 5: Solve for x
    x = 3,951,407.05/1,960.90
  6. Step 6: Final answer
    x = 2,015.10

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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.