Home / 8,128.00-11,216.12-4,542.68

Finding the Fourth Proportional to 8,128.00, 11,216.12 and 4,542.68

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Solution

The fourth proportional to 8,128.00, 11,216.12 and 4,542.68 is: 6,268.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.00 : 11,216.12 = 4,542.68 : x
  2. Step 2: Convert to fraction form
    8,128.00/11,216.12 = 4,542.68/x
  3. Step 3: Cross multiply
    8,128.00x = 11,216.12 × 4,542.68
  4. Step 4: Simplify right side
    8,128.00x = 50,951,274.88
  5. Step 5: Solve for x
    x = 50,951,274.88/8,128.00
  6. Step 6: Final answer
    x = 6,268.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.