Home / 3,201.45-4,801.86-1,121.07

Finding the Fourth Proportional to 3,201.45, 4,801.86 and 1,121.07

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Solution

The fourth proportional to 3,201.45, 4,801.86 and 1,121.07 is: 1,681.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,201.45 : 4,801.86 = 1,121.07 : x
  2. Step 2: Convert to fraction form
    3,201.45/4,801.86 = 1,121.07/x
  3. Step 3: Cross multiply
    3,201.45x = 4,801.86 × 1,121.07
  4. Step 4: Simplify right side
    3,201.45x = 5,383,221.19
  5. Step 5: Solve for x
    x = 5,383,221.19/3,201.45
  6. Step 6: Final answer
    x = 1,681.49

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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.