Home / 6,610.89-9,122.19-3,778.45

Finding the Fourth Proportional to 6,610.89, 9,122.19 and 3,778.45

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Solution

The fourth proportional to 6,610.89, 9,122.19 and 3,778.45 is: 5,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,610.89 : 9,122.19 = 3,778.45 : x
  2. Step 2: Convert to fraction form
    6,610.89/9,122.19 = 3,778.45/x
  3. Step 3: Cross multiply
    6,610.89x = 9,122.19 × 3,778.45
  4. Step 4: Simplify right side
    6,610.89x = 34,467,738.81
  5. Step 5: Solve for x
    x = 34,467,738.81/6,610.89
  6. Step 6: Final answer
    x = 5,213.78

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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.