Home / 1,261.85-1,741.16-702.32

Finding the Fourth Proportional to 1,261.85, 1,741.16 and 702.32

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Solution

The fourth proportional to 1,261.85, 1,741.16 and 702.32 is: 969.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.85 : 1,741.16 = 702.32 : x
  2. Step 2: Convert to fraction form
    1,261.85/1,741.16 = 702.32/x
  3. Step 3: Cross multiply
    1,261.85x = 1,741.16 × 702.32
  4. Step 4: Simplify right side
    1,261.85x = 1,222,839.27
  5. Step 5: Solve for x
    x = 1,222,839.27/1,261.85
  6. Step 6: Final answer
    x = 969.09

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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.