Home / 7,943.88-11,915.27-2,679.33

Finding the Fourth Proportional to 7,943.88, 11,915.27 and 2,679.33

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Solution

The fourth proportional to 7,943.88, 11,915.27 and 2,679.33 is: 4,018.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.88 : 11,915.27 = 2,679.33 : x
  2. Step 2: Convert to fraction form
    7,943.88/11,915.27 = 2,679.33/x
  3. Step 3: Cross multiply
    7,943.88x = 11,915.27 × 2,679.33
  4. Step 4: Simplify right side
    7,943.88x = 31,924,940.37
  5. Step 5: Solve for x
    x = 31,924,940.37/7,943.88
  6. Step 6: Final answer
    x = 4,018.81

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1.5x scale

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.