Home / 3,930.33-5,423.74-2,161.94

Finding the Fourth Proportional to 3,930.33, 5,423.74 and 2,161.94

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Solution

The fourth proportional to 3,930.33, 5,423.74 and 2,161.94 is: 2,983.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.33 : 5,423.74 = 2,161.94 : x
  2. Step 2: Convert to fraction form
    3,930.33/5,423.74 = 2,161.94/x
  3. Step 3: Cross multiply
    3,930.33x = 5,423.74 × 2,161.94
  4. Step 4: Simplify right side
    3,930.33x = 11,725,776.04
  5. Step 5: Solve for x
    x = 11,725,776.04/3,930.33
  6. Step 6: Final answer
    x = 2,983.41

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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.