Home / 2,639.50-3,956.67-2,146.92

Finding the Fourth Proportional to 2,639.50, 3,956.67 and 2,146.92

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Solution

The fourth proportional to 2,639.50, 3,956.67 and 2,146.92 is: 3,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.50 : 3,956.67 = 2,146.92 : x
  2. Step 2: Convert to fraction form
    2,639.50/3,956.67 = 2,146.92/x
  3. Step 3: Cross multiply
    2,639.50x = 3,956.67 × 2,146.92
  4. Step 4: Simplify right side
    2,639.50x = 8,494,653.96
  5. Step 5: Solve for x
    x = 8,494,653.96/2,639.50
  6. Step 6: Final answer
    x = 3,218.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.