Home / 2,256.20-3,113.94-1,261.79

Finding the Fourth Proportional to 2,256.20, 3,113.94 and 1,261.79

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Solution

The fourth proportional to 2,256.20, 3,113.94 and 1,261.79 is: 1,741.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.20 : 3,113.94 = 1,261.79 : x
  2. Step 2: Convert to fraction form
    2,256.20/3,113.94 = 1,261.79/x
  3. Step 3: Cross multiply
    2,256.20x = 3,113.94 × 1,261.79
  4. Step 4: Simplify right side
    2,256.20x = 3,929,122.78
  5. Step 5: Solve for x
    x = 3,929,122.78/2,256.20
  6. Step 6: Final answer
    x = 1,741.48

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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.