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Finding the Fourth Proportional to 3,940.60, 5,915.10 and 2,384.56

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Solution

The fourth proportional to 3,940.60, 5,915.10 and 2,384.56 is: 3,579.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.60 : 5,915.10 = 2,384.56 : x
  2. Step 2: Convert to fraction form
    3,940.60/5,915.10 = 2,384.56/x
  3. Step 3: Cross multiply
    3,940.60x = 5,915.10 × 2,384.56
  4. Step 4: Simplify right side
    3,940.60x = 14,104,910.86
  5. Step 5: Solve for x
    x = 14,104,910.86/3,940.60
  6. Step 6: Final answer
    x = 3,579.38

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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.