Home / 3,974.70-5,485.41-2,206.89

Finding the Fourth Proportional to 3,974.70, 5,485.41 and 2,206.89

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Solution

The fourth proportional to 3,974.70, 5,485.41 and 2,206.89 is: 3,045.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.70 : 5,485.41 = 2,206.89 : x
  2. Step 2: Convert to fraction form
    3,974.70/5,485.41 = 2,206.89/x
  3. Step 3: Cross multiply
    3,974.70x = 5,485.41 × 2,206.89
  4. Step 4: Simplify right side
    3,974.70x = 12,105,696.47
  5. Step 5: Solve for x
    x = 12,105,696.47/3,974.70
  6. Step 6: Final answer
    x = 3,045.69

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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.