Home / 2,815.44-4,223.16-1,276.88

Finding the Fourth Proportional to 2,815.44, 4,223.16 and 1,276.88

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Solution

The fourth proportional to 2,815.44, 4,223.16 and 1,276.88 is: 1,915.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.44 : 4,223.16 = 1,276.88 : x
  2. Step 2: Convert to fraction form
    2,815.44/4,223.16 = 1,276.88/x
  3. Step 3: Cross multiply
    2,815.44x = 4,223.16 × 1,276.88
  4. Step 4: Simplify right side
    2,815.44x = 5,392,468.54
  5. Step 5: Solve for x
    x = 5,392,468.54/2,815.44
  6. Step 6: Final answer
    x = 1,915.32

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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.