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Finding the Fourth Proportional to 3,698.55, 5,096.12 and 2,859.39

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Solution

The fourth proportional to 3,698.55, 5,096.12 and 2,859.39 is: 3,939.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,698.55 : 5,096.12 = 2,859.39 : x
  2. Step 2: Convert to fraction form
    3,698.55/5,096.12 = 2,859.39/x
  3. Step 3: Cross multiply
    3,698.55x = 5,096.12 × 2,859.39
  4. Step 4: Simplify right side
    3,698.55x = 14,571,780.27
  5. Step 5: Solve for x
    x = 14,571,780.27/3,698.55
  6. Step 6: Final answer
    x = 3,939.86

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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.