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Finding the Fourth Proportional to 8,382.96, 12,574.26 and 3,188.79

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Solution

The fourth proportional to 8,382.96, 12,574.26 and 3,188.79 is: 4,783.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,382.96 : 12,574.26 = 3,188.79 : x
  2. Step 2: Convert to fraction form
    8,382.96/12,574.26 = 3,188.79/x
  3. Step 3: Cross multiply
    8,382.96x = 12,574.26 × 3,188.79
  4. Step 4: Simplify right side
    8,382.96x = 40,096,674.55
  5. Step 5: Solve for x
    x = 40,096,674.55/8,382.96
  6. Step 6: Final answer
    x = 4,783.12

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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.