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Finding the Fourth Proportional to 7,959.17, 11,938.76 and 2,765.09

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Solution

The fourth proportional to 7,959.17, 11,938.76 and 2,765.09 is: 4,147.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.17 : 11,938.76 = 2,765.09 : x
  2. Step 2: Convert to fraction form
    7,959.17/11,938.76 = 2,765.09/x
  3. Step 3: Cross multiply
    7,959.17x = 11,938.76 × 2,765.09
  4. Step 4: Simplify right side
    7,959.17x = 33,011,745.89
  5. Step 5: Solve for x
    x = 33,011,745.89/7,959.17
  6. Step 6: Final answer
    x = 4,147.64

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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.