Home / 3,391.80-5,085.95-1,200.21

Finding the Fourth Proportional to 3,391.80, 5,085.95 and 1,200.21

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Solution

The fourth proportional to 3,391.80, 5,085.95 and 1,200.21 is: 1,799.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.80 : 5,085.95 = 1,200.21 : x
  2. Step 2: Convert to fraction form
    3,391.80/5,085.95 = 1,200.21/x
  3. Step 3: Cross multiply
    3,391.80x = 5,085.95 × 1,200.21
  4. Step 4: Simplify right side
    3,391.80x = 6,104,202.05
  5. Step 5: Solve for x
    x = 6,104,202.05/3,391.80
  6. Step 6: Final answer
    x = 1,799.69

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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.