Home / 3,871.95-5,343.23-2,103.54

Finding the Fourth Proportional to 3,871.95, 5,343.23 and 2,103.54

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Solution

The fourth proportional to 3,871.95, 5,343.23 and 2,103.54 is: 2,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.95 : 5,343.23 = 2,103.54 : x
  2. Step 2: Convert to fraction form
    3,871.95/5,343.23 = 2,103.54/x
  3. Step 3: Cross multiply
    3,871.95x = 5,343.23 × 2,103.54
  4. Step 4: Simplify right side
    3,871.95x = 11,239,698.03
  5. Step 5: Solve for x
    x = 11,239,698.03/3,871.95
  6. Step 6: Final answer
    x = 2,902.85

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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.