Home / 5,919.12-8,169.12-3,821.76

Finding the Fourth Proportional to 5,919.12, 8,169.12 and 3,821.76

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Solution

The fourth proportional to 5,919.12, 8,169.12 and 3,821.76 is: 5,274.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,919.12 : 8,169.12 = 3,821.76 : x
  2. Step 2: Convert to fraction form
    5,919.12/8,169.12 = 3,821.76/x
  3. Step 3: Cross multiply
    5,919.12x = 8,169.12 × 3,821.76
  4. Step 4: Simplify right side
    5,919.12x = 31,220,416.05
  5. Step 5: Solve for x
    x = 31,220,416.05/5,919.12
  6. Step 6: Final answer
    x = 5,274.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.