Home / 2,919.48-4,379.22-1,938.57

Finding the Fourth Proportional to 2,919.48, 4,379.22 and 1,938.57

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Solution

The fourth proportional to 2,919.48, 4,379.22 and 1,938.57 is: 2,907.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.48 : 4,379.22 = 1,938.57 : x
  2. Step 2: Convert to fraction form
    2,919.48/4,379.22 = 1,938.57/x
  3. Step 3: Cross multiply
    2,919.48x = 4,379.22 × 1,938.57
  4. Step 4: Simplify right side
    2,919.48x = 8,489,424.52
  5. Step 5: Solve for x
    x = 8,489,424.52/2,919.48
  6. Step 6: Final answer
    x = 2,907.86

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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.