Home / 1,916.11-2,874.70-683.65

Finding the Fourth Proportional to 1,916.11, 2,874.70 and 683.65

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Solution

The fourth proportional to 1,916.11, 2,874.70 and 683.65 is: 1,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.11 : 2,874.70 = 683.65 : x
  2. Step 2: Convert to fraction form
    1,916.11/2,874.70 = 683.65/x
  3. Step 3: Cross multiply
    1,916.11x = 2,874.70 × 683.65
  4. Step 4: Simplify right side
    1,916.11x = 1,965,288.66
  5. Step 5: Solve for x
    x = 1,965,288.66/1,916.11
  6. Step 6: Final answer
    x = 1,025.67

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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.