Home / 2,745.60-4,118.80-896.80

Finding the Fourth Proportional to 2,745.60, 4,118.80 and 896.80

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Solution

The fourth proportional to 2,745.60, 4,118.80 and 896.80 is: 1,345.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,745.60 : 4,118.80 = 896.80 : x
  2. Step 2: Convert to fraction form
    2,745.60/4,118.80 = 896.80/x
  3. Step 3: Cross multiply
    2,745.60x = 4,118.80 × 896.80
  4. Step 4: Simplify right side
    2,745.60x = 3,693,739.84
  5. Step 5: Solve for x
    x = 3,693,739.84/2,745.60
  6. Step 6: Final answer
    x = 1,345.33

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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.