Home / 1,269.48-1,749.96-1,121.88

Finding the Fourth Proportional to 1,269.48, 1,749.96 and 1,121.88

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Solution

The fourth proportional to 1,269.48, 1,749.96 and 1,121.88 is: 1,546.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269.48 : 1,749.96 = 1,121.88 : x
  2. Step 2: Convert to fraction form
    1,269.48/1,749.96 = 1,121.88/x
  3. Step 3: Cross multiply
    1,269.48x = 1,749.96 × 1,121.88
  4. Step 4: Simplify right side
    1,269.48x = 1,963,245.12
  5. Step 5: Solve for x
    x = 1,963,245.12/1,269.48
  6. Step 6: Final answer
    x = 1,546.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.