Home / 3,912.26-5,868.29-1,315.20

Finding the Fourth Proportional to 3,912.26, 5,868.29 and 1,315.20

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Solution

The fourth proportional to 3,912.26, 5,868.29 and 1,315.20 is: 1,972.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.26 : 5,868.29 = 1,315.20 : x
  2. Step 2: Convert to fraction form
    3,912.26/5,868.29 = 1,315.20/x
  3. Step 3: Cross multiply
    3,912.26x = 5,868.29 × 1,315.20
  4. Step 4: Simplify right side
    3,912.26x = 7,717,939.09
  5. Step 5: Solve for x
    x = 7,717,939.09/3,912.26
  6. Step 6: Final answer
    x = 1,972.76

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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.