Home / 1,261.80-1,741.30-702.41

Finding the Fourth Proportional to 1,261.80, 1,741.30 and 702.41

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Solution

The fourth proportional to 1,261.80, 1,741.30 and 702.41 is: 969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.80 : 1,741.30 = 702.41 : x
  2. Step 2: Convert to fraction form
    1,261.80/1,741.30 = 702.41/x
  3. Step 3: Cross multiply
    1,261.80x = 1,741.30 × 702.41
  4. Step 4: Simplify right side
    1,261.80x = 1,223,096.07
  5. Step 5: Solve for x
    x = 1,223,096.07/1,261.80
  6. Step 6: Final answer
    x = 969.33

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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.