Home / 8,198.09-11,312.36-5,172.07

Finding the Fourth Proportional to 8,198.09, 11,312.36 and 5,172.07

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Solution

The fourth proportional to 8,198.09, 11,312.36 and 5,172.07 is: 7,136.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,198.09 : 11,312.36 = 5,172.07 : x
  2. Step 2: Convert to fraction form
    8,198.09/11,312.36 = 5,172.07/x
  3. Step 3: Cross multiply
    8,198.09x = 11,312.36 × 5,172.07
  4. Step 4: Simplify right side
    8,198.09x = 58,508,366.07
  5. Step 5: Solve for x
    x = 58,508,366.07/8,198.09
  6. Step 6: Final answer
    x = 7,136.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.