Home / 1,449.20-1,995.36-1,200.12

Finding the Fourth Proportional to 1,449.20, 1,995.36 and 1,200.12

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Solution

The fourth proportional to 1,449.20, 1,995.36 and 1,200.12 is: 1,652.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.20 : 1,995.36 = 1,200.12 : x
  2. Step 2: Convert to fraction form
    1,449.20/1,995.36 = 1,200.12/x
  3. Step 3: Cross multiply
    1,449.20x = 1,995.36 × 1,200.12
  4. Step 4: Simplify right side
    1,449.20x = 2,394,671.44
  5. Step 5: Solve for x
    x = 2,394,671.44/1,449.20
  6. Step 6: Final answer
    x = 1,652.41

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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.