Home / 8,131.39-11,215.67-6,450.44

Finding the Fourth Proportional to 8,131.39, 11,215.67 and 6,450.44

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Solution

The fourth proportional to 8,131.39, 11,215.67 and 6,450.44 is: 8,897.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.39 : 11,215.67 = 6,450.44 : x
  2. Step 2: Convert to fraction form
    8,131.39/11,215.67 = 6,450.44/x
  3. Step 3: Cross multiply
    8,131.39x = 11,215.67 × 6,450.44
  4. Step 4: Simplify right side
    8,131.39x = 72,345,918.06
  5. Step 5: Solve for x
    x = 72,345,918.06/8,131.39
  6. Step 6: Final answer
    x = 8,897.12

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Double scale
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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.