Home / 5,638.47-8,458.27-1,940.21

Finding the Fourth Proportional to 5,638.47, 8,458.27 and 1,940.21

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Solution

The fourth proportional to 5,638.47, 8,458.27 and 1,940.21 is: 2,910.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.47 : 8,458.27 = 1,940.21 : x
  2. Step 2: Convert to fraction form
    5,638.47/8,458.27 = 1,940.21/x
  3. Step 3: Cross multiply
    5,638.47x = 8,458.27 × 1,940.21
  4. Step 4: Simplify right side
    5,638.47x = 16,410,839.32
  5. Step 5: Solve for x
    x = 16,410,839.32/5,638.47
  6. Step 6: Final answer
    x = 2,910.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.