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Finding the Fourth Proportional to 5,651.34, 8,479.53 and 2,188.86

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Solution

The fourth proportional to 5,651.34, 8,479.53 and 2,188.86 is: 3,284.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,651.34 : 8,479.53 = 2,188.86 : x
  2. Step 2: Convert to fraction form
    5,651.34/8,479.53 = 2,188.86/x
  3. Step 3: Cross multiply
    5,651.34x = 8,479.53 × 2,188.86
  4. Step 4: Simplify right side
    5,651.34x = 18,560,504.04
  5. Step 5: Solve for x
    x = 18,560,504.04/5,651.34
  6. Step 6: Final answer
    x = 3,284.27

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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.