Home / 1,916.10-2,874.21-683.49

Finding the Fourth Proportional to 1,916.10, 2,874.21 and 683.49

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Solution

The fourth proportional to 1,916.10, 2,874.21 and 683.49 is: 1,025.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.10 : 2,874.21 = 683.49 : x
  2. Step 2: Convert to fraction form
    1,916.10/2,874.21 = 683.49/x
  3. Step 3: Cross multiply
    1,916.10x = 2,874.21 × 683.49
  4. Step 4: Simplify right side
    1,916.10x = 1,964,493.79
  5. Step 5: Solve for x
    x = 1,964,493.79/1,916.10
  6. Step 6: Final answer
    x = 1,025.26

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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.