Home / 5,478.33-8,221.45-2,192.34

Finding the Fourth Proportional to 5,478.33, 8,221.45 and 2,192.34

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Solution

The fourth proportional to 5,478.33, 8,221.45 and 2,192.34 is: 3,290.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.33 : 8,221.45 = 2,192.34 : x
  2. Step 2: Convert to fraction form
    5,478.33/8,221.45 = 2,192.34/x
  3. Step 3: Cross multiply
    5,478.33x = 8,221.45 × 2,192.34
  4. Step 4: Simplify right side
    5,478.33x = 18,024,213.69
  5. Step 5: Solve for x
    x = 18,024,213.69/5,478.33
  6. Step 6: Final answer
    x = 3,290.09

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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.