Home / 8,390.12-12,584.97-3,456.34

Finding the Fourth Proportional to 8,390.12, 12,584.97 and 3,456.34

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Solution

The fourth proportional to 8,390.12, 12,584.97 and 3,456.34 is: 5,184.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.12 : 12,584.97 = 3,456.34 : x
  2. Step 2: Convert to fraction form
    8,390.12/12,584.97 = 3,456.34/x
  3. Step 3: Cross multiply
    8,390.12x = 12,584.97 × 3,456.34
  4. Step 4: Simplify right side
    8,390.12x = 43,497,903.75
  5. Step 5: Solve for x
    x = 43,497,903.75/8,390.12
  6. Step 6: Final answer
    x = 5,184.42

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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.