Home / 5,230.72-7,220.48-3,906.56

Finding the Fourth Proportional to 5,230.72, 7,220.48 and 3,906.56

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Solution

The fourth proportional to 5,230.72, 7,220.48 and 3,906.56 is: 5,392.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.72 : 7,220.48 = 3,906.56 : x
  2. Step 2: Convert to fraction form
    5,230.72/7,220.48 = 3,906.56/x
  3. Step 3: Cross multiply
    5,230.72x = 7,220.48 × 3,906.56
  4. Step 4: Simplify right side
    5,230.72x = 28,207,238.35
  5. Step 5: Solve for x
    x = 28,207,238.35/5,230.72
  6. Step 6: Final answer
    x = 5,392.61

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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.