Home / 8,212.69-12,319.04-2,289.59

Finding the Fourth Proportional to 8,212.69, 12,319.04 and 2,289.59

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Solution

The fourth proportional to 8,212.69, 12,319.04 and 2,289.59 is: 3,434.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.69 : 12,319.04 = 2,289.59 : x
  2. Step 2: Convert to fraction form
    8,212.69/12,319.04 = 2,289.59/x
  3. Step 3: Cross multiply
    8,212.69x = 12,319.04 × 2,289.59
  4. Step 4: Simplify right side
    8,212.69x = 28,205,539.35
  5. Step 5: Solve for x
    x = 28,205,539.35/8,212.69
  6. Step 6: Final answer
    x = 3,434.39

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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.