Home / 3,957.55-5,450.30-3,871.43

Finding the Fourth Proportional to 3,957.55, 5,450.30 and 3,871.43

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Solution

The fourth proportional to 3,957.55, 5,450.30 and 3,871.43 is: 5,331.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.55 : 5,450.30 = 3,871.43 : x
  2. Step 2: Convert to fraction form
    3,957.55/5,450.30 = 3,871.43/x
  3. Step 3: Cross multiply
    3,957.55x = 5,450.30 × 3,871.43
  4. Step 4: Simplify right side
    3,957.55x = 21,100,454.93
  5. Step 5: Solve for x
    x = 21,100,454.93/3,957.55
  6. Step 6: Final answer
    x = 5,331.70

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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.