Home / 8,140.20-11,231.82-4,783.56

Finding the Fourth Proportional to 8,140.20, 11,231.82 and 4,783.56

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Solution

The fourth proportional to 8,140.20, 11,231.82 and 4,783.56 is: 6,600.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.20 : 11,231.82 = 4,783.56 : x
  2. Step 2: Convert to fraction form
    8,140.20/11,231.82 = 4,783.56/x
  3. Step 3: Cross multiply
    8,140.20x = 11,231.82 × 4,783.56
  4. Step 4: Simplify right side
    8,140.20x = 53,728,084.88
  5. Step 5: Solve for x
    x = 53,728,084.88/8,140.20
  6. Step 6: Final answer
    x = 6,600.34

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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.