Home / 1,997.20-2,993.86-1,120.13

Finding the Fourth Proportional to 1,997.20, 2,993.86 and 1,120.13

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Solution

The fourth proportional to 1,997.20, 2,993.86 and 1,120.13 is: 1,679.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.20 : 2,993.86 = 1,120.13 : x
  2. Step 2: Convert to fraction form
    1,997.20/2,993.86 = 1,120.13/x
  3. Step 3: Cross multiply
    1,997.20x = 2,993.86 × 1,120.13
  4. Step 4: Simplify right side
    1,997.20x = 3,353,512.40
  5. Step 5: Solve for x
    x = 3,353,512.40/1,997.20
  6. Step 6: Final answer
    x = 1,679.11

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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.