Home / 1,261.76-1,741.25-702.25

Finding the Fourth Proportional to 1,261.76, 1,741.25 and 702.25

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Solution

The fourth proportional to 1,261.76, 1,741.25 and 702.25 is: 969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.76 : 1,741.25 = 702.25 : x
  2. Step 2: Convert to fraction form
    1,261.76/1,741.25 = 702.25/x
  3. Step 3: Cross multiply
    1,261.76x = 1,741.25 × 702.25
  4. Step 4: Simplify right side
    1,261.76x = 1,222,784.95
  5. Step 5: Solve for x
    x = 1,222,784.95/1,261.76
  6. Step 6: Final answer
    x = 969.11

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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.