Home / 7,119.22-9,823.83-3,975.61

Finding the Fourth Proportional to 7,119.22, 9,823.83 and 3,975.61

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Solution

The fourth proportional to 7,119.22, 9,823.83 and 3,975.61 is: 5,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.22 : 9,823.83 = 3,975.61 : x
  2. Step 2: Convert to fraction form
    7,119.22/9,823.83 = 3,975.61/x
  3. Step 3: Cross multiply
    7,119.22x = 9,823.83 × 3,975.61
  4. Step 4: Simplify right side
    7,119.22x = 39,055,716.79
  5. Step 5: Solve for x
    x = 39,055,716.79/7,119.22
  6. Step 6: Final answer
    x = 5,485.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.