Home / 3,975.09-5,485.46-2,206.81

Finding the Fourth Proportional to 3,975.09, 5,485.46 and 2,206.81

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Solution

The fourth proportional to 3,975.09, 5,485.46 and 2,206.81 is: 3,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.09 : 5,485.46 = 2,206.81 : x
  2. Step 2: Convert to fraction form
    3,975.09/5,485.46 = 2,206.81/x
  3. Step 3: Cross multiply
    3,975.09x = 5,485.46 × 2,206.81
  4. Step 4: Simplify right side
    3,975.09x = 12,105,343.23
  5. Step 5: Solve for x
    x = 12,105,343.23/3,975.09
  6. Step 6: Final answer
    x = 3,045.30

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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.