Home / 1,961.02-2,702.91-1,261.18

Finding the Fourth Proportional to 1,961.02, 2,702.91 and 1,261.18

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Solution

The fourth proportional to 1,961.02, 2,702.91 and 1,261.18 is: 1,738.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.02 : 2,702.91 = 1,261.18 : x
  2. Step 2: Convert to fraction form
    1,961.02/2,702.91 = 1,261.18/x
  3. Step 3: Cross multiply
    1,961.02x = 2,702.91 × 1,261.18
  4. Step 4: Simplify right side
    1,961.02x = 3,408,856.03
  5. Step 5: Solve for x
    x = 3,408,856.03/1,961.02
  6. Step 6: Final answer
    x = 1,738.31

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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.