Home / 5,478.23-8,213.30-2,188.82

Finding the Fourth Proportional to 5,478.23, 8,213.30 and 2,188.82

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Solution

The fourth proportional to 5,478.23, 8,213.30 and 2,188.82 is: 3,281.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.23 : 8,213.30 = 2,188.82 : x
  2. Step 2: Convert to fraction form
    5,478.23/8,213.30 = 2,188.82/x
  3. Step 3: Cross multiply
    5,478.23x = 8,213.30 × 2,188.82
  4. Step 4: Simplify right side
    5,478.23x = 17,977,453.10
  5. Step 5: Solve for x
    x = 17,977,453.10/5,478.23
  6. Step 6: Final answer
    x = 3,281.62

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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.