Home / 3,871.99-5,343.28-2,103.56

Finding the Fourth Proportional to 3,871.99, 5,343.28 and 2,103.56

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Solution

The fourth proportional to 3,871.99, 5,343.28 and 2,103.56 is: 2,902.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.99 : 5,343.28 = 2,103.56 : x
  2. Step 2: Convert to fraction form
    3,871.99/5,343.28 = 2,103.56/x
  3. Step 3: Cross multiply
    3,871.99x = 5,343.28 × 2,103.56
  4. Step 4: Simplify right side
    3,871.99x = 11,239,910.08
  5. Step 5: Solve for x
    x = 11,239,910.08/3,871.99
  6. Step 6: Final answer
    x = 2,902.88

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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.