Home / 8,142.14-12,218.16-3,525.14

Finding the Fourth Proportional to 8,142.14, 12,218.16 and 3,525.14

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Solution

The fourth proportional to 8,142.14, 12,218.16 and 3,525.14 is: 5,289.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.14 : 12,218.16 = 3,525.14 : x
  2. Step 2: Convert to fraction form
    8,142.14/12,218.16 = 3,525.14/x
  3. Step 3: Cross multiply
    8,142.14x = 12,218.16 × 3,525.14
  4. Step 4: Simplify right side
    8,142.14x = 43,070,724.54
  5. Step 5: Solve for x
    x = 43,070,724.54/8,142.14
  6. Step 6: Final answer
    x = 5,289.85

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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.