Home / 3,871.74-5,343.87-2,380.95

Finding the Fourth Proportional to 3,871.74, 5,343.87 and 2,380.95

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Solution

The fourth proportional to 3,871.74, 5,343.87 and 2,380.95 is: 3,286.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.74 : 5,343.87 = 2,380.95 : x
  2. Step 2: Convert to fraction form
    3,871.74/5,343.87 = 2,380.95/x
  3. Step 3: Cross multiply
    3,871.74x = 5,343.87 × 2,380.95
  4. Step 4: Simplify right side
    3,871.74x = 12,723,487.28
  5. Step 5: Solve for x
    x = 12,723,487.28/3,871.74
  6. Step 6: Final answer
    x = 3,286.25

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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.