Home / 2,919.10-4,377.64-838.54

Finding the Fourth Proportional to 2,919.10, 4,377.64 and 838.54

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Solution

The fourth proportional to 2,919.10, 4,377.64 and 838.54 is: 1,257.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.10 : 4,377.64 = 838.54 : x
  2. Step 2: Convert to fraction form
    2,919.10/4,377.64 = 838.54/x
  3. Step 3: Cross multiply
    2,919.10x = 4,377.64 × 838.54
  4. Step 4: Simplify right side
    2,919.10x = 3,670,826.25
  5. Step 5: Solve for x
    x = 3,670,826.25/2,919.10
  6. Step 6: Final answer
    x = 1,257.52

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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.