Home / 7,880.89-11,822.09-2,614.78

Finding the Fourth Proportional to 7,880.89, 11,822.09 and 2,614.78

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Solution

The fourth proportional to 7,880.89, 11,822.09 and 2,614.78 is: 3,922.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.89 : 11,822.09 = 2,614.78 : x
  2. Step 2: Convert to fraction form
    7,880.89/11,822.09 = 2,614.78/x
  3. Step 3: Cross multiply
    7,880.89x = 11,822.09 × 2,614.78
  4. Step 4: Simplify right side
    7,880.89x = 30,912,164.49
  5. Step 5: Solve for x
    x = 30,912,164.49/7,880.89
  6. Step 6: Final answer
    x = 3,922.42

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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.