Home / 8,419.52-12,629.28-3,222.56

Finding the Fourth Proportional to 8,419.52, 12,629.28 and 3,222.56

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Solution

The fourth proportional to 8,419.52, 12,629.28 and 3,222.56 is: 4,833.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.52 : 12,629.28 = 3,222.56 : x
  2. Step 2: Convert to fraction form
    8,419.52/12,629.28 = 3,222.56/x
  3. Step 3: Cross multiply
    8,419.52x = 12,629.28 × 3,222.56
  4. Step 4: Simplify right side
    8,419.52x = 40,698,612.56
  5. Step 5: Solve for x
    x = 40,698,612.56/8,419.52
  6. Step 6: Final answer
    x = 4,833.84

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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.