Home / 1,261.75-1,741.12-702.19

Finding the Fourth Proportional to 1,261.75, 1,741.12 and 702.19

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Solution

The fourth proportional to 1,261.75, 1,741.12 and 702.19 is: 968.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.75 : 1,741.12 = 702.19 : x
  2. Step 2: Convert to fraction form
    1,261.75/1,741.12 = 702.19/x
  3. Step 3: Cross multiply
    1,261.75x = 1,741.12 × 702.19
  4. Step 4: Simplify right side
    1,261.75x = 1,222,593.54
  5. Step 5: Solve for x
    x = 1,222,593.54/1,261.75
  6. Step 6: Final answer
    x = 968.97

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1.5x scale

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.