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Finding the Fourth Proportional to 2,871.46, 3,958.13 and 2,400.92

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Solution

The fourth proportional to 2,871.46, 3,958.13 and 2,400.92 is: 3,309.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.46 : 3,958.13 = 2,400.92 : x
  2. Step 2: Convert to fraction form
    2,871.46/3,958.13 = 2,400.92/x
  3. Step 3: Cross multiply
    2,871.46x = 3,958.13 × 2,400.92
  4. Step 4: Simplify right side
    2,871.46x = 9,503,133.27
  5. Step 5: Solve for x
    x = 9,503,133.27/2,871.46
  6. Step 6: Final answer
    x = 3,309.51

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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.