Home / 8,021.80-12,029.64-3,638.80

Finding the Fourth Proportional to 8,021.80, 12,029.64 and 3,638.80

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Solution

The fourth proportional to 8,021.80, 12,029.64 and 3,638.80 is: 5,456.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,021.80 : 12,029.64 = 3,638.80 : x
  2. Step 2: Convert to fraction form
    8,021.80/12,029.64 = 3,638.80/x
  3. Step 3: Cross multiply
    8,021.80x = 12,029.64 × 3,638.80
  4. Step 4: Simplify right side
    8,021.80x = 43,773,454.03
  5. Step 5: Solve for x
    x = 43,773,454.03/8,021.80
  6. Step 6: Final answer
    x = 5,456.81

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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.