Home / 2,639.25-3,956.29-2,146.67

Finding the Fourth Proportional to 2,639.25, 3,956.29 and 2,146.67

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Solution

The fourth proportional to 2,639.25, 3,956.29 and 2,146.67 is: 3,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.25 : 3,956.29 = 2,146.67 : x
  2. Step 2: Convert to fraction form
    2,639.25/3,956.29 = 2,146.67/x
  3. Step 3: Cross multiply
    2,639.25x = 3,956.29 × 2,146.67
  4. Step 4: Simplify right side
    2,639.25x = 8,492,849.05
  5. Step 5: Solve for x
    x = 8,492,849.05/2,639.25
  6. Step 6: Final answer
    x = 3,217.90

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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.