Home / 3,880.45-5,355.21-2,201.77

Finding the Fourth Proportional to 3,880.45, 5,355.21 and 2,201.77

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Solution

The fourth proportional to 3,880.45, 5,355.21 and 2,201.77 is: 3,038.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.45 : 5,355.21 = 2,201.77 : x
  2. Step 2: Convert to fraction form
    3,880.45/5,355.21 = 2,201.77/x
  3. Step 3: Cross multiply
    3,880.45x = 5,355.21 × 2,201.77
  4. Step 4: Simplify right side
    3,880.45x = 11,790,940.72
  5. Step 5: Solve for x
    x = 11,790,940.72/3,880.45
  6. Step 6: Final answer
    x = 3,038.55

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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.