Home / 1,268.20-1,747.38-1,047.88

Finding the Fourth Proportional to 1,268.20, 1,747.38 and 1,047.88

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Solution

The fourth proportional to 1,268.20, 1,747.38 and 1,047.88 is: 1,443.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.20 : 1,747.38 = 1,047.88 : x
  2. Step 2: Convert to fraction form
    1,268.20/1,747.38 = 1,047.88/x
  3. Step 3: Cross multiply
    1,268.20x = 1,747.38 × 1,047.88
  4. Step 4: Simplify right side
    1,268.20x = 1,831,044.55
  5. Step 5: Solve for x
    x = 1,831,044.55/1,268.20
  6. Step 6: Final answer
    x = 1,443.81

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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.