Home / 3,919.28-5,881.20-1,455.80

Finding the Fourth Proportional to 3,919.28, 5,881.20 and 1,455.80

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Solution

The fourth proportional to 3,919.28, 5,881.20 and 1,455.80 is: 2,184.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.28 : 5,881.20 = 1,455.80 : x
  2. Step 2: Convert to fraction form
    3,919.28/5,881.20 = 1,455.80/x
  3. Step 3: Cross multiply
    3,919.28x = 5,881.20 × 1,455.80
  4. Step 4: Simplify right side
    3,919.28x = 8,561,821.55
  5. Step 5: Solve for x
    x = 8,561,821.55/3,919.28
  6. Step 6: Final answer
    x = 2,184.54

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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.