Home / 3,912.47-5,868.69-2,157.39

Finding the Fourth Proportional to 3,912.47, 5,868.69 and 2,157.39

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Solution

The fourth proportional to 3,912.47, 5,868.69 and 2,157.39 is: 3,236.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.47 : 5,868.69 = 2,157.39 : x
  2. Step 2: Convert to fraction form
    3,912.47/5,868.69 = 2,157.39/x
  3. Step 3: Cross multiply
    3,912.47x = 5,868.69 × 2,157.39
  4. Step 4: Simplify right side
    3,912.47x = 12,661,053.12
  5. Step 5: Solve for x
    x = 12,661,053.12/3,912.47
  6. Step 6: Final answer
    x = 3,236.08

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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.