Home / 2,919.44-4,374.91-1,438.21

Finding the Fourth Proportional to 2,919.44, 4,374.91 and 1,438.21

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Solution

The fourth proportional to 2,919.44, 4,374.91 and 1,438.21 is: 2,155.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.44 : 4,374.91 = 1,438.21 : x
  2. Step 2: Convert to fraction form
    2,919.44/4,374.91 = 1,438.21/x
  3. Step 3: Cross multiply
    2,919.44x = 4,374.91 × 1,438.21
  4. Step 4: Simplify right side
    2,919.44x = 6,292,021.97
  5. Step 5: Solve for x
    x = 6,292,021.97/2,919.44
  6. Step 6: Final answer
    x = 2,155.21

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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.