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Finding the Fourth Proportional to 2,768.60, 4,152.90 and 2,250.20

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Solution

The fourth proportional to 2,768.60, 4,152.90 and 2,250.20 is: 3,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.60 : 4,152.90 = 2,250.20 : x
  2. Step 2: Convert to fraction form
    2,768.60/4,152.90 = 2,250.20/x
  3. Step 3: Cross multiply
    2,768.60x = 4,152.90 × 2,250.20
  4. Step 4: Simplify right side
    2,768.60x = 9,344,855.58
  5. Step 5: Solve for x
    x = 9,344,855.58/2,768.60
  6. Step 6: Final answer
    x = 3,375.30

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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.