Home / 1,942.81-2,912.69-1,324.98

Finding the Fourth Proportional to 1,942.81, 2,912.69 and 1,324.98

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Solution

The fourth proportional to 1,942.81, 2,912.69 and 1,324.98 is: 1,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.81 : 2,912.69 = 1,324.98 : x
  2. Step 2: Convert to fraction form
    1,942.81/2,912.69 = 1,324.98/x
  3. Step 3: Cross multiply
    1,942.81x = 2,912.69 × 1,324.98
  4. Step 4: Simplify right side
    1,942.81x = 3,859,256.00
  5. Step 5: Solve for x
    x = 3,859,256.00/1,942.81
  6. Step 6: Final answer
    x = 1,986.43

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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.