Home / 2,190.97-3,023.60-1,246.90

Finding the Fourth Proportional to 2,190.97, 3,023.60 and 1,246.90

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Solution

The fourth proportional to 2,190.97, 3,023.60 and 1,246.90 is: 1,720.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.97 : 3,023.60 = 1,246.90 : x
  2. Step 2: Convert to fraction form
    2,190.97/3,023.60 = 1,246.90/x
  3. Step 3: Cross multiply
    2,190.97x = 3,023.60 × 1,246.90
  4. Step 4: Simplify right side
    2,190.97x = 3,770,111.72
  5. Step 5: Solve for x
    x = 3,770,111.72/2,190.97
  6. Step 6: Final answer
    x = 1,720.75

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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.