Home / 3,946.70-5,446.31-2,178.27

Finding the Fourth Proportional to 3,946.70, 5,446.31 and 2,178.27

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Solution

The fourth proportional to 3,946.70, 5,446.31 and 2,178.27 is: 3,005.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.70 : 5,446.31 = 2,178.27 : x
  2. Step 2: Convert to fraction form
    3,946.70/5,446.31 = 2,178.27/x
  3. Step 3: Cross multiply
    3,946.70x = 5,446.31 × 2,178.27
  4. Step 4: Simplify right side
    3,946.70x = 11,863,525.85
  5. Step 5: Solve for x
    x = 11,863,525.85/3,946.70
  6. Step 6: Final answer
    x = 3,005.94

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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.