Home / 3,871.14-5,336.88-2,659.78

Finding the Fourth Proportional to 3,871.14, 5,336.88 and 2,659.78

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Solution

The fourth proportional to 3,871.14, 5,336.88 and 2,659.78 is: 3,666.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.14 : 5,336.88 = 2,659.78 : x
  2. Step 2: Convert to fraction form
    3,871.14/5,336.88 = 2,659.78/x
  3. Step 3: Cross multiply
    3,871.14x = 5,336.88 × 2,659.78
  4. Step 4: Simplify right side
    3,871.14x = 14,194,926.69
  5. Step 5: Solve for x
    x = 14,194,926.69/3,871.14
  6. Step 6: Final answer
    x = 3,666.86

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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.