Home / 8,571.90-12,860.61-3,645.75

Finding the Fourth Proportional to 8,571.90, 12,860.61 and 3,645.75

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Solution

The fourth proportional to 8,571.90, 12,860.61 and 3,645.75 is: 5,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.90 : 12,860.61 = 3,645.75 : x
  2. Step 2: Convert to fraction form
    8,571.90/12,860.61 = 3,645.75/x
  3. Step 3: Cross multiply
    8,571.90x = 12,860.61 × 3,645.75
  4. Step 4: Simplify right side
    8,571.90x = 46,886,568.91
  5. Step 5: Solve for x
    x = 46,886,568.91/8,571.90
  6. Step 6: Final answer
    x = 5,469.80

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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.