Home / 1,629.21-2,442.60-1,107.90

Finding the Fourth Proportional to 1,629.21, 2,442.60 and 1,107.90

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Solution

The fourth proportional to 1,629.21, 2,442.60 and 1,107.90 is: 1,661.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.21 : 2,442.60 = 1,107.90 : x
  2. Step 2: Convert to fraction form
    1,629.21/2,442.60 = 1,107.90/x
  3. Step 3: Cross multiply
    1,629.21x = 2,442.60 × 1,107.90
  4. Step 4: Simplify right side
    1,629.21x = 2,706,156.54
  5. Step 5: Solve for x
    x = 2,706,156.54/1,629.21
  6. Step 6: Final answer
    x = 1,661.02

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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.