Home / 4,084.80-6,121.80-3,620.40

Finding the Fourth Proportional to 4,084.80, 6,121.80 and 3,620.40

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Solution

The fourth proportional to 4,084.80, 6,121.80 and 3,620.40 is: 5,425.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,084.80 : 6,121.80 = 3,620.40 : x
  2. Step 2: Convert to fraction form
    4,084.80/6,121.80 = 3,620.40/x
  3. Step 3: Cross multiply
    4,084.80x = 6,121.80 × 3,620.40
  4. Step 4: Simplify right side
    4,084.80x = 22,163,364.72
  5. Step 5: Solve for x
    x = 22,163,364.72/4,084.80
  6. Step 6: Final answer
    x = 5,425.81

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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.