Home / 3,975.19-5,485.77-2,206.79

Finding the Fourth Proportional to 3,975.19, 5,485.77 and 2,206.79

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Solution

The fourth proportional to 3,975.19, 5,485.77 and 2,206.79 is: 3,045.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.19 : 5,485.77 = 2,206.79 : x
  2. Step 2: Convert to fraction form
    3,975.19/5,485.77 = 2,206.79/x
  3. Step 3: Cross multiply
    3,975.19x = 5,485.77 × 2,206.79
  4. Step 4: Simplify right side
    3,975.19x = 12,105,956.09
  5. Step 5: Solve for x
    x = 12,105,956.09/3,975.19
  6. Step 6: Final answer
    x = 3,045.38

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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.