Home / 8,129.69-12,189.06-3,744.75

Finding the Fourth Proportional to 8,129.69, 12,189.06 and 3,744.75

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Solution

The fourth proportional to 8,129.69, 12,189.06 and 3,744.75 is: 5,614.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.69 : 12,189.06 = 3,744.75 : x
  2. Step 2: Convert to fraction form
    8,129.69/12,189.06 = 3,744.75/x
  3. Step 3: Cross multiply
    8,129.69x = 12,189.06 × 3,744.75
  4. Step 4: Simplify right side
    8,129.69x = 45,644,982.44
  5. Step 5: Solve for x
    x = 45,644,982.44/8,129.69
  6. Step 6: Final answer
    x = 5,614.60

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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.