Home / 3,942.89-5,914.32-1,345.82

Finding the Fourth Proportional to 3,942.89, 5,914.32 and 1,345.82

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Solution

The fourth proportional to 3,942.89, 5,914.32 and 1,345.82 is: 2,018.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.89 : 5,914.32 = 1,345.82 : x
  2. Step 2: Convert to fraction form
    3,942.89/5,914.32 = 1,345.82/x
  3. Step 3: Cross multiply
    3,942.89x = 5,914.32 × 1,345.82
  4. Step 4: Simplify right side
    3,942.89x = 7,959,610.14
  5. Step 5: Solve for x
    x = 7,959,610.14/3,942.89
  6. Step 6: Final answer
    x = 2,018.72

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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.