Home / 8,919.68-13,383.25-3,919.47

Finding the Fourth Proportional to 8,919.68, 13,383.25 and 3,919.47

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Solution

The fourth proportional to 8,919.68, 13,383.25 and 3,919.47 is: 5,880.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.68 : 13,383.25 = 3,919.47 : x
  2. Step 2: Convert to fraction form
    8,919.68/13,383.25 = 3,919.47/x
  3. Step 3: Cross multiply
    8,919.68x = 13,383.25 × 3,919.47
  4. Step 4: Simplify right side
    8,919.68x = 52,455,237.08
  5. Step 5: Solve for x
    x = 52,455,237.08/8,919.68
  6. Step 6: Final answer
    x = 5,880.85

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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.