Home / 5,453.20-8,188-3,115.84

Finding the Fourth Proportional to 5,453.20, 8,188 and 3,115.84

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Solution

The fourth proportional to 5,453.20, 8,188 and 3,115.84 is: 4,678.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,453.20 : 8,188 = 3,115.84 : x
  2. Step 2: Convert to fraction form
    5,453.20/8,188 = 3,115.84/x
  3. Step 3: Cross multiply
    5,453.20x = 8,188 × 3,115.84
  4. Step 4: Simplify right side
    5,453.20x = 25,512,497.92
  5. Step 5: Solve for x
    x = 25,512,497.92/5,453.20
  6. Step 6: Final answer
    x = 4,678.45

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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.