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Finding the Fourth Proportional to 6,163.60, 8,478.13 and 5,403.62

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Solution

The fourth proportional to 6,163.60, 8,478.13 and 5,403.62 is: 7,432.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,163.60 : 8,478.13 = 5,403.62 : x
  2. Step 2: Convert to fraction form
    6,163.60/8,478.13 = 5,403.62/x
  3. Step 3: Cross multiply
    6,163.60x = 8,478.13 × 5,403.62
  4. Step 4: Simplify right side
    6,163.60x = 45,812,550.44
  5. Step 5: Solve for x
    x = 45,812,550.44/6,163.60
  6. Step 6: Final answer
    x = 7,432.76

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1.5x scale

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.