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Finding the Fourth Proportional to 5,408.64, 8,100.18 and 5,318.28

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Solution

The fourth proportional to 5,408.64, 8,100.18 and 5,318.28 is: 7,964.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.64 : 8,100.18 = 5,318.28 : x
  2. Step 2: Convert to fraction form
    5,408.64/8,100.18 = 5,318.28/x
  3. Step 3: Cross multiply
    5,408.64x = 8,100.18 × 5,318.28
  4. Step 4: Simplify right side
    5,408.64x = 43,079,025.29
  5. Step 5: Solve for x
    x = 43,079,025.29/5,408.64
  6. Step 6: Final answer
    x = 7,964.85

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1.5x scale

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.