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Finding the Fourth Proportional to 5,978.30, 8,968.86 and 1,818.54

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Solution

The fourth proportional to 5,978.30, 8,968.86 and 1,818.54 is: 2,728.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978.30 : 8,968.86 = 1,818.54 : x
  2. Step 2: Convert to fraction form
    5,978.30/8,968.86 = 1,818.54/x
  3. Step 3: Cross multiply
    5,978.30x = 8,968.86 × 1,818.54
  4. Step 4: Simplify right side
    5,978.30x = 16,310,230.66
  5. Step 5: Solve for x
    x = 16,310,230.66/5,978.30
  6. Step 6: Final answer
    x = 2,728.24

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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.