Home / 3,923.84-5,415.89-2,245.76

Finding the Fourth Proportional to 3,923.84, 5,415.89 and 2,245.76

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Solution

The fourth proportional to 3,923.84, 5,415.89 and 2,245.76 is: 3,099.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.84 : 5,415.89 = 2,245.76 : x
  2. Step 2: Convert to fraction form
    3,923.84/5,415.89 = 2,245.76/x
  3. Step 3: Cross multiply
    3,923.84x = 5,415.89 × 2,245.76
  4. Step 4: Simplify right side
    3,923.84x = 12,162,777.90
  5. Step 5: Solve for x
    x = 12,162,777.90/3,923.84
  6. Step 6: Final answer
    x = 3,099.71

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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.