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Finding the Fourth Proportional to 7,817.09, 11,726.69 and 2,890.22

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Solution

The fourth proportional to 7,817.09, 11,726.69 and 2,890.22 is: 4,335.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.09 : 11,726.69 = 2,890.22 : x
  2. Step 2: Convert to fraction form
    7,817.09/11,726.69 = 2,890.22/x
  3. Step 3: Cross multiply
    7,817.09x = 11,726.69 × 2,890.22
  4. Step 4: Simplify right side
    7,817.09x = 33,892,640.89
  5. Step 5: Solve for x
    x = 33,892,640.89/7,817.09
  6. Step 6: Final answer
    x = 4,335.71

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1.5x scale

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.