Home / 8,945.12-13,418.16-2,789.12

Finding the Fourth Proportional to 8,945.12, 13,418.16 and 2,789.12

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Solution

The fourth proportional to 8,945.12, 13,418.16 and 2,789.12 is: 4,183.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.12 : 13,418.16 = 2,789.12 : x
  2. Step 2: Convert to fraction form
    8,945.12/13,418.16 = 2,789.12/x
  3. Step 3: Cross multiply
    8,945.12x = 13,418.16 × 2,789.12
  4. Step 4: Simplify right side
    8,945.12x = 37,424,858.42
  5. Step 5: Solve for x
    x = 37,424,858.42/8,945.12
  6. Step 6: Final answer
    x = 4,183.83

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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.