Home / 3,190.07-4,783.41-998.21

Finding the Fourth Proportional to 3,190.07, 4,783.41 and 998.21

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Solution

The fourth proportional to 3,190.07, 4,783.41 and 998.21 is: 1,496.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.07 : 4,783.41 = 998.21 : x
  2. Step 2: Convert to fraction form
    3,190.07/4,783.41 = 998.21/x
  3. Step 3: Cross multiply
    3,190.07x = 4,783.41 × 998.21
  4. Step 4: Simplify right side
    3,190.07x = 4,774,823.78
  5. Step 5: Solve for x
    x = 4,774,823.78/3,190.07
  6. Step 6: Final answer
    x = 1,496.78

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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.