Home / 7,118.91-9,824.25-3,975.09

Finding the Fourth Proportional to 7,118.91, 9,824.25 and 3,975.09

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Solution

The fourth proportional to 7,118.91, 9,824.25 and 3,975.09 is: 5,485.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.91 : 9,824.25 = 3,975.09 : x
  2. Step 2: Convert to fraction form
    7,118.91/9,824.25 = 3,975.09/x
  3. Step 3: Cross multiply
    7,118.91x = 9,824.25 × 3,975.09
  4. Step 4: Simplify right side
    7,118.91x = 39,052,277.93
  5. Step 5: Solve for x
    x = 39,052,277.93/7,118.91
  6. Step 6: Final answer
    x = 5,485.71

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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.