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Finding the Fourth Proportional to 3,912.15, 5,868.63 and 3,633.51

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Solution

The fourth proportional to 3,912.15, 5,868.63 and 3,633.51 is: 5,450.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.15 : 5,868.63 = 3,633.51 : x
  2. Step 2: Convert to fraction form
    3,912.15/5,868.63 = 3,633.51/x
  3. Step 3: Cross multiply
    3,912.15x = 5,868.63 × 3,633.51
  4. Step 4: Simplify right side
    3,912.15x = 21,323,725.79
  5. Step 5: Solve for x
    x = 21,323,725.79/3,912.15
  6. Step 6: Final answer
    x = 5,450.64

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1.5x scale

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.