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Finding the Fourth Proportional to 1,745.70, 2,409.42 and 1,073.20

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Solution

The fourth proportional to 1,745.70, 2,409.42 and 1,073.20 is: 1,481.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.70 : 2,409.42 = 1,073.20 : x
  2. Step 2: Convert to fraction form
    1,745.70/2,409.42 = 1,073.20/x
  3. Step 3: Cross multiply
    1,745.70x = 2,409.42 × 1,073.20
  4. Step 4: Simplify right side
    1,745.70x = 2,585,789.54
  5. Step 5: Solve for x
    x = 2,585,789.54/1,745.70
  6. Step 6: Final answer
    x = 1,481.23

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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.