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Finding the Fourth Proportional to 6,251.68, 8,619.24 and 5,185.54

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Solution

The fourth proportional to 6,251.68, 8,619.24 and 5,185.54 is: 7,149.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,251.68 : 8,619.24 = 5,185.54 : x
  2. Step 2: Convert to fraction form
    6,251.68/8,619.24 = 5,185.54/x
  3. Step 3: Cross multiply
    6,251.68x = 8,619.24 × 5,185.54
  4. Step 4: Simplify right side
    6,251.68x = 44,695,413.79
  5. Step 5: Solve for x
    x = 44,695,413.79/6,251.68
  6. Step 6: Final answer
    x = 7,149.34

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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.