Home / 3,953.66-5,455.88-2,161.11

Finding the Fourth Proportional to 3,953.66, 5,455.88 and 2,161.11

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Solution

The fourth proportional to 3,953.66, 5,455.88 and 2,161.11 is: 2,982.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.66 : 5,455.88 = 2,161.11 : x
  2. Step 2: Convert to fraction form
    3,953.66/5,455.88 = 2,161.11/x
  3. Step 3: Cross multiply
    3,953.66x = 5,455.88 × 2,161.11
  4. Step 4: Simplify right side
    3,953.66x = 11,790,734.63
  5. Step 5: Solve for x
    x = 11,790,734.63/3,953.66
  6. Step 6: Final answer
    x = 2,982.23

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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.