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Finding the Fourth Proportional to 5,978.64, 8,250.40 and 3,325.92

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Solution

The fourth proportional to 5,978.64, 8,250.40 and 3,325.92 is: 4,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978.64 : 8,250.40 = 3,325.92 : x
  2. Step 2: Convert to fraction form
    5,978.64/8,250.40 = 3,325.92/x
  3. Step 3: Cross multiply
    5,978.64x = 8,250.40 × 3,325.92
  4. Step 4: Simplify right side
    5,978.64x = 27,440,170.37
  5. Step 5: Solve for x
    x = 27,440,170.37/5,978.64
  6. Step 6: Final answer
    x = 4,589.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.