Home / 7,912.42-11,868.48-2,365.78

Finding the Fourth Proportional to 7,912.42, 11,868.48 and 2,365.78

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Solution

The fourth proportional to 7,912.42, 11,868.48 and 2,365.78 is: 3,548.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.42 : 11,868.48 = 2,365.78 : x
  2. Step 2: Convert to fraction form
    7,912.42/11,868.48 = 2,365.78/x
  3. Step 3: Cross multiply
    7,912.42x = 11,868.48 × 2,365.78
  4. Step 4: Simplify right side
    7,912.42x = 28,078,212.61
  5. Step 5: Solve for x
    x = 28,078,212.61/7,912.42
  6. Step 6: Final answer
    x = 3,548.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.