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Finding the Fourth Proportional to 2,754.12, 3,800.46 and 1,512.12

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Solution

The fourth proportional to 2,754.12, 3,800.46 and 1,512.12 is: 2,086.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,754.12 : 3,800.46 = 1,512.12 : x
  2. Step 2: Convert to fraction form
    2,754.12/3,800.46 = 1,512.12/x
  3. Step 3: Cross multiply
    2,754.12x = 3,800.46 × 1,512.12
  4. Step 4: Simplify right side
    2,754.12x = 5,746,751.58
  5. Step 5: Solve for x
    x = 5,746,751.58/2,754.12
  6. Step 6: Final answer
    x = 2,086.60

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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.