Home / 3,186.88-4,398.19-1,928.25

Finding the Fourth Proportional to 3,186.88, 4,398.19 and 1,928.25

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Solution

The fourth proportional to 3,186.88, 4,398.19 and 1,928.25 is: 2,661.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.88 : 4,398.19 = 1,928.25 : x
  2. Step 2: Convert to fraction form
    3,186.88/4,398.19 = 1,928.25/x
  3. Step 3: Cross multiply
    3,186.88x = 4,398.19 × 1,928.25
  4. Step 4: Simplify right side
    3,186.88x = 8,480,795.78
  5. Step 5: Solve for x
    x = 8,480,795.78/3,186.88
  6. Step 6: Final answer
    x = 2,661.16

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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.