Home / 2,255.21-3,378.97-1,267.64

Finding the Fourth Proportional to 2,255.21, 3,378.97 and 1,267.64

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Solution

The fourth proportional to 2,255.21, 3,378.97 and 1,267.64 is: 1,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.21 : 3,378.97 = 1,267.64 : x
  2. Step 2: Convert to fraction form
    2,255.21/3,378.97 = 1,267.64/x
  3. Step 3: Cross multiply
    2,255.21x = 3,378.97 × 1,267.64
  4. Step 4: Simplify right side
    2,255.21x = 4,283,332.41
  5. Step 5: Solve for x
    x = 4,283,332.41/2,255.21
  6. Step 6: Final answer
    x = 1,899.30

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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.