Home / 5,211.39-7,192.99-3,220.75

Finding the Fourth Proportional to 5,211.39, 7,192.99 and 3,220.75

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Solution

The fourth proportional to 5,211.39, 7,192.99 and 3,220.75 is: 4,445.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.39 : 7,192.99 = 3,220.75 : x
  2. Step 2: Convert to fraction form
    5,211.39/7,192.99 = 3,220.75/x
  3. Step 3: Cross multiply
    5,211.39x = 7,192.99 × 3,220.75
  4. Step 4: Simplify right side
    5,211.39x = 23,166,822.54
  5. Step 5: Solve for x
    x = 23,166,822.54/5,211.39
  6. Step 6: Final answer
    x = 4,445.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.