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Finding the Fourth Proportional to 28,609.50, 42,917.22 and 7,833

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Solution

The fourth proportional to 28,609.50, 42,917.22 and 7,833 is: 11,750.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,609.50 : 42,917.22 = 7,833 : x
  2. Step 2: Convert to fraction form
    28,609.50/42,917.22 = 7,833/x
  3. Step 3: Cross multiply
    28,609.50x = 42,917.22 × 7,833
  4. Step 4: Simplify right side
    28,609.50x = 336,170,584.26
  5. Step 5: Solve for x
    x = 336,170,584.26/28,609.50
  6. Step 6: Final answer
    x = 11,750.31

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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.