Home / 3,975.14-5,485.79-2,206.85

Finding the Fourth Proportional to 3,975.14, 5,485.79 and 2,206.85

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Solution

The fourth proportional to 3,975.14, 5,485.79 and 2,206.85 is: 3,045.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.14 : 5,485.79 = 2,206.85 : x
  2. Step 2: Convert to fraction form
    3,975.14/5,485.79 = 2,206.85/x
  3. Step 3: Cross multiply
    3,975.14x = 5,485.79 × 2,206.85
  4. Step 4: Simplify right side
    3,975.14x = 12,106,293.75
  5. Step 5: Solve for x
    x = 12,106,293.75/3,975.14
  6. Step 6: Final answer
    x = 3,045.50

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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.