Home / 3,988.08-5,982.93-1,391.22

Finding the Fourth Proportional to 3,988.08, 5,982.93 and 1,391.22

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Solution

The fourth proportional to 3,988.08, 5,982.93 and 1,391.22 is: 2,087.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.08 : 5,982.93 = 1,391.22 : x
  2. Step 2: Convert to fraction form
    3,988.08/5,982.93 = 1,391.22/x
  3. Step 3: Cross multiply
    3,988.08x = 5,982.93 × 1,391.22
  4. Step 4: Simplify right side
    3,988.08x = 8,323,571.87
  5. Step 5: Solve for x
    x = 8,323,571.87/3,988.08
  6. Step 6: Final answer
    x = 2,087.11

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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.