Home / 1,165.14-1,745.49-1,115.73

Finding the Fourth Proportional to 1,165.14, 1,745.49 and 1,115.73

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Solution

The fourth proportional to 1,165.14, 1,745.49 and 1,115.73 is: 1,671.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.14 : 1,745.49 = 1,115.73 : x
  2. Step 2: Convert to fraction form
    1,165.14/1,745.49 = 1,115.73/x
  3. Step 3: Cross multiply
    1,165.14x = 1,745.49 × 1,115.73
  4. Step 4: Simplify right side
    1,165.14x = 1,947,495.56
  5. Step 5: Solve for x
    x = 1,947,495.56/1,165.14
  6. Step 6: Final answer
    x = 1,671.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.