Home / 8,428.69-12,650.33-3,238.21

Finding the Fourth Proportional to 8,428.69, 12,650.33 and 3,238.21

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Solution

The fourth proportional to 8,428.69, 12,650.33 and 3,238.21 is: 4,860.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.69 : 12,650.33 = 3,238.21 : x
  2. Step 2: Convert to fraction form
    8,428.69/12,650.33 = 3,238.21/x
  3. Step 3: Cross multiply
    8,428.69x = 12,650.33 × 3,238.21
  4. Step 4: Simplify right side
    8,428.69x = 40,964,430.80
  5. Step 5: Solve for x
    x = 40,964,430.80/8,428.69
  6. Step 6: Final answer
    x = 4,860.12

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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.