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Finding the Fourth Proportional to 5,679.16, 8,511.18 and 2,751.64

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Solution

The fourth proportional to 5,679.16, 8,511.18 and 2,751.64 is: 4,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.16 : 8,511.18 = 2,751.64 : x
  2. Step 2: Convert to fraction form
    5,679.16/8,511.18 = 2,751.64/x
  3. Step 3: Cross multiply
    5,679.16x = 8,511.18 × 2,751.64
  4. Step 4: Simplify right side
    5,679.16x = 23,419,703.34
  5. Step 5: Solve for x
    x = 23,419,703.34/5,679.16
  6. Step 6: Final answer
    x = 4,123.80

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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.