Home / 2,255.95-3,113.31-1,261.23

Finding the Fourth Proportional to 2,255.95, 3,113.31 and 1,261.23

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Solution

The fourth proportional to 2,255.95, 3,113.31 and 1,261.23 is: 1,740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.95 : 3,113.31 = 1,261.23 : x
  2. Step 2: Convert to fraction form
    2,255.95/3,113.31 = 1,261.23/x
  3. Step 3: Cross multiply
    2,255.95x = 3,113.31 × 1,261.23
  4. Step 4: Simplify right side
    2,255.95x = 3,926,599.97
  5. Step 5: Solve for x
    x = 3,926,599.97/2,255.95
  6. Step 6: Final answer
    x = 1,740.55

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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.