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Finding the Fourth Proportional to 5,978.64, 8,960.94 and 2,687.88

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Solution

The fourth proportional to 5,978.64, 8,960.94 and 2,687.88 is: 4,028.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978.64 : 8,960.94 = 2,687.88 : x
  2. Step 2: Convert to fraction form
    5,978.64/8,960.94 = 2,687.88/x
  3. Step 3: Cross multiply
    5,978.64x = 8,960.94 × 2,687.88
  4. Step 4: Simplify right side
    5,978.64x = 24,085,931.41
  5. Step 5: Solve for x
    x = 24,085,931.41/5,978.64
  6. Step 6: Final answer
    x = 4,028.66

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.