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Finding the Fourth Proportional to 28,735.56, 43,103.28 and 7,959

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Solution

The fourth proportional to 28,735.56, 43,103.28 and 7,959 is: 11,938.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,735.56 : 43,103.28 = 7,959 : x
  2. Step 2: Convert to fraction form
    28,735.56/43,103.28 = 7,959/x
  3. Step 3: Cross multiply
    28,735.56x = 43,103.28 × 7,959
  4. Step 4: Simplify right side
    28,735.56x = 343,059,005.52
  5. Step 5: Solve for x
    x = 343,059,005.52/28,735.56
  6. Step 6: Final answer
    x = 11,938.48

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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.