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Finding the Fourth Proportional to 5,815.69, 8,723.63 and 5,520.31

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Solution

The fourth proportional to 5,815.69, 8,723.63 and 5,520.31 is: 8,280.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.69 : 8,723.63 = 5,520.31 : x
  2. Step 2: Convert to fraction form
    5,815.69/8,723.63 = 5,520.31/x
  3. Step 3: Cross multiply
    5,815.69x = 8,723.63 × 5,520.31
  4. Step 4: Simplify right side
    5,815.69x = 48,157,141.93
  5. Step 5: Solve for x
    x = 48,157,141.93/5,815.69
  6. Step 6: Final answer
    x = 8,280.56

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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.