Home / 1,436.36-1,976.82-1,261.40

Finding the Fourth Proportional to 1,436.36, 1,976.82 and 1,261.40

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Solution

The fourth proportional to 1,436.36, 1,976.82 and 1,261.40 is: 1,736.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.36 : 1,976.82 = 1,261.40 : x
  2. Step 2: Convert to fraction form
    1,436.36/1,976.82 = 1,261.40/x
  3. Step 3: Cross multiply
    1,436.36x = 1,976.82 × 1,261.40
  4. Step 4: Simplify right side
    1,436.36x = 2,493,560.75
  5. Step 5: Solve for x
    x = 2,493,560.75/1,436.36
  6. Step 6: Final answer
    x = 1,736.03

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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.