Home / 1,261.66-1,741.21-702.26

Finding the Fourth Proportional to 1,261.66, 1,741.21 and 702.26

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Solution

The fourth proportional to 1,261.66, 1,741.21 and 702.26 is: 969.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.66 : 1,741.21 = 702.26 : x
  2. Step 2: Convert to fraction form
    1,261.66/1,741.21 = 702.26/x
  3. Step 3: Cross multiply
    1,261.66x = 1,741.21 × 702.26
  4. Step 4: Simplify right side
    1,261.66x = 1,222,776.74
  5. Step 5: Solve for x
    x = 1,222,776.74/1,261.66
  6. Step 6: Final answer
    x = 969.18

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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.