Home / 2,261.56-3,121.20-1,266.88

Finding the Fourth Proportional to 2,261.56, 3,121.20 and 1,266.88

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Solution

The fourth proportional to 2,261.56, 3,121.20 and 1,266.88 is: 1,748.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.56 : 3,121.20 = 1,266.88 : x
  2. Step 2: Convert to fraction form
    2,261.56/3,121.20 = 1,266.88/x
  3. Step 3: Cross multiply
    2,261.56x = 3,121.20 × 1,266.88
  4. Step 4: Simplify right side
    2,261.56x = 3,954,185.86
  5. Step 5: Solve for x
    x = 3,954,185.86/2,261.56
  6. Step 6: Final answer
    x = 1,748.43

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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.