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Finding the Fourth Proportional to 3,846.86, 5,308.01 and 2,144.99

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Solution

The fourth proportional to 3,846.86, 5,308.01 and 2,144.99 is: 2,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,846.86 : 5,308.01 = 2,144.99 : x
  2. Step 2: Convert to fraction form
    3,846.86/5,308.01 = 2,144.99/x
  3. Step 3: Cross multiply
    3,846.86x = 5,308.01 × 2,144.99
  4. Step 4: Simplify right side
    3,846.86x = 11,385,591.10
  5. Step 5: Solve for x
    x = 11,385,591.10/3,846.86
  6. Step 6: Final answer
    x = 2,959.71

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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.