Home / 2,261.79-3,121.32-1,253.47

Finding the Fourth Proportional to 2,261.79, 3,121.32 and 1,253.47

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Solution

The fourth proportional to 2,261.79, 3,121.32 and 1,253.47 is: 1,729.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.79 : 3,121.32 = 1,253.47 : x
  2. Step 2: Convert to fraction form
    2,261.79/3,121.32 = 1,253.47/x
  3. Step 3: Cross multiply
    2,261.79x = 3,121.32 × 1,253.47
  4. Step 4: Simplify right side
    2,261.79x = 3,912,480.98
  5. Step 5: Solve for x
    x = 3,912,480.98/2,261.79
  6. Step 6: Final answer
    x = 1,729.82

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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.