Home / 3,391.21-5,086.95-1,200.16

Finding the Fourth Proportional to 3,391.21, 5,086.95 and 1,200.16

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Solution

The fourth proportional to 3,391.21, 5,086.95 and 1,200.16 is: 1,800.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.21 : 5,086.95 = 1,200.16 : x
  2. Step 2: Convert to fraction form
    3,391.21/5,086.95 = 1,200.16/x
  3. Step 3: Cross multiply
    3,391.21x = 5,086.95 × 1,200.16
  4. Step 4: Simplify right side
    3,391.21x = 6,105,128.48
  5. Step 5: Solve for x
    x = 6,105,128.48/3,391.21
  6. Step 6: Final answer
    x = 1,800.28

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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.