Home / 3,912.91-5,865.36-1,721.23

Finding the Fourth Proportional to 3,912.91, 5,865.36 and 1,721.23

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Solution

The fourth proportional to 3,912.91, 5,865.36 and 1,721.23 is: 2,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.91 : 5,865.36 = 1,721.23 : x
  2. Step 2: Convert to fraction form
    3,912.91/5,865.36 = 1,721.23/x
  3. Step 3: Cross multiply
    3,912.91x = 5,865.36 × 1,721.23
  4. Step 4: Simplify right side
    3,912.91x = 10,095,633.59
  5. Step 5: Solve for x
    x = 10,095,633.59/3,912.91
  6. Step 6: Final answer
    x = 2,580.08

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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.