Home / 3,975.26-5,485.86-2,207.12

Finding the Fourth Proportional to 3,975.26, 5,485.86 and 2,207.12

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Solution

The fourth proportional to 3,975.26, 5,485.86 and 2,207.12 is: 3,045.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.26 : 5,485.86 = 2,207.12 : x
  2. Step 2: Convert to fraction form
    3,975.26/5,485.86 = 2,207.12/x
  3. Step 3: Cross multiply
    3,975.26x = 5,485.86 × 2,207.12
  4. Step 4: Simplify right side
    3,975.26x = 12,107,951.32
  5. Step 5: Solve for x
    x = 12,107,951.32/3,975.26
  6. Step 6: Final answer
    x = 3,045.83

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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.