Home / 8,422.11-12,629.07-3,157.92

Finding the Fourth Proportional to 8,422.11, 12,629.07 and 3,157.92

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Solution

The fourth proportional to 8,422.11, 12,629.07 and 3,157.92 is: 4,735.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.11 : 12,629.07 = 3,157.92 : x
  2. Step 2: Convert to fraction form
    8,422.11/12,629.07 = 3,157.92/x
  3. Step 3: Cross multiply
    8,422.11x = 12,629.07 × 3,157.92
  4. Step 4: Simplify right side
    8,422.11x = 39,881,592.73
  5. Step 5: Solve for x
    x = 39,881,592.73/8,422.11
  6. Step 6: Final answer
    x = 4,735.34

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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.