Home / 8,147.30-12,212.61-3,214.94

Finding the Fourth Proportional to 8,147.30, 12,212.61 and 3,214.94

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Solution

The fourth proportional to 8,147.30, 12,212.61 and 3,214.94 is: 4,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.30 : 12,212.61 = 3,214.94 : x
  2. Step 2: Convert to fraction form
    8,147.30/12,212.61 = 3,214.94/x
  3. Step 3: Cross multiply
    8,147.30x = 12,212.61 × 3,214.94
  4. Step 4: Simplify right side
    8,147.30x = 39,262,808.39
  5. Step 5: Solve for x
    x = 39,262,808.39/8,147.30
  6. Step 6: Final answer
    x = 4,819.12

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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.