Home / 3,190.41-4,785.75-999.09

Finding the Fourth Proportional to 3,190.41, 4,785.75 and 999.09

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Solution

The fourth proportional to 3,190.41, 4,785.75 and 999.09 is: 1,498.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.41 : 4,785.75 = 999.09 : x
  2. Step 2: Convert to fraction form
    3,190.41/4,785.75 = 999.09/x
  3. Step 3: Cross multiply
    3,190.41x = 4,785.75 × 999.09
  4. Step 4: Simplify right side
    3,190.41x = 4,781,394.97
  5. Step 5: Solve for x
    x = 4,781,394.97/3,190.41
  6. Step 6: Final answer
    x = 1,498.68

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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.