Home / 8,186.96-12,278.64-3,255.68

Finding the Fourth Proportional to 8,186.96, 12,278.64 and 3,255.68

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Solution

The fourth proportional to 8,186.96, 12,278.64 and 3,255.68 is: 4,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.96 : 12,278.64 = 3,255.68 : x
  2. Step 2: Convert to fraction form
    8,186.96/12,278.64 = 3,255.68/x
  3. Step 3: Cross multiply
    8,186.96x = 12,278.64 × 3,255.68
  4. Step 4: Simplify right side
    8,186.96x = 39,975,322.68
  5. Step 5: Solve for x
    x = 39,975,322.68/8,186.96
  6. Step 6: Final answer
    x = 4,882.80

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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.