Home / 8,668.09-13,004.70-3,121.30

Finding the Fourth Proportional to 8,668.09, 13,004.70 and 3,121.30

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Solution

The fourth proportional to 8,668.09, 13,004.70 and 3,121.30 is: 4,682.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.09 : 13,004.70 = 3,121.30 : x
  2. Step 2: Convert to fraction form
    8,668.09/13,004.70 = 3,121.30/x
  3. Step 3: Cross multiply
    8,668.09x = 13,004.70 × 3,121.30
  4. Step 4: Simplify right side
    8,668.09x = 40,591,570.11
  5. Step 5: Solve for x
    x = 40,591,570.11/8,668.09
  6. Step 6: Final answer
    x = 4,682.87

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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.