Home / 5,381.92-8,074.32-1,919.36

Finding the Fourth Proportional to 5,381.92, 8,074.32 and 1,919.36

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Solution

The fourth proportional to 5,381.92, 8,074.32 and 1,919.36 is: 2,879.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.92 : 8,074.32 = 1,919.36 : x
  2. Step 2: Convert to fraction form
    5,381.92/8,074.32 = 1,919.36/x
  3. Step 3: Cross multiply
    5,381.92x = 8,074.32 × 1,919.36
  4. Step 4: Simplify right side
    5,381.92x = 15,497,526.84
  5. Step 5: Solve for x
    x = 15,497,526.84/5,381.92
  6. Step 6: Final answer
    x = 2,879.55

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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.