Home / 1,331.98-1,840.00-1,261.92

Finding the Fourth Proportional to 1,331.98, 1,840.00 and 1,261.92

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Solution

The fourth proportional to 1,331.98, 1,840.00 and 1,261.92 is: 1,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.98 : 1,840.00 = 1,261.92 : x
  2. Step 2: Convert to fraction form
    1,331.98/1,840.00 = 1,261.92/x
  3. Step 3: Cross multiply
    1,331.98x = 1,840.00 × 1,261.92
  4. Step 4: Simplify right side
    1,331.98x = 2,321,923.31
  5. Step 5: Solve for x
    x = 2,321,923.31/1,331.98
  6. Step 6: Final answer
    x = 1,743.21

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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.