Home / 8,100.20-12,147.97-3,421.27

Finding the Fourth Proportional to 8,100.20, 12,147.97 and 3,421.27

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Solution

The fourth proportional to 8,100.20, 12,147.97 and 3,421.27 is: 5,130.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.20 : 12,147.97 = 3,421.27 : x
  2. Step 2: Convert to fraction form
    8,100.20/12,147.97 = 3,421.27/x
  3. Step 3: Cross multiply
    8,100.20x = 12,147.97 × 3,421.27
  4. Step 4: Simplify right side
    8,100.20x = 41,561,407.48
  5. Step 5: Solve for x
    x = 41,561,407.48/8,100.20
  6. Step 6: Final answer
    x = 5,130.91

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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.