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Finding the Fourth Proportional to 2,761.08, 4,134.58 and 2,679

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Solution

The fourth proportional to 2,761.08, 4,134.58 and 2,679 is: 4,011.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.08 : 4,134.58 = 2,679 : x
  2. Step 2: Convert to fraction form
    2,761.08/4,134.58 = 2,679/x
  3. Step 3: Cross multiply
    2,761.08x = 4,134.58 × 2,679
  4. Step 4: Simplify right side
    2,761.08x = 11,076,539.82
  5. Step 5: Solve for x
    x = 11,076,539.82/2,761.08
  6. Step 6: Final answer
    x = 4,011.67

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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.