Home / 5,419.62-7,479.85-3,912.16

Finding the Fourth Proportional to 5,419.62, 7,479.85 and 3,912.16

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Solution

The fourth proportional to 5,419.62, 7,479.85 and 3,912.16 is: 5,399.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.62 : 7,479.85 = 3,912.16 : x
  2. Step 2: Convert to fraction form
    5,419.62/7,479.85 = 3,912.16/x
  3. Step 3: Cross multiply
    5,419.62x = 7,479.85 × 3,912.16
  4. Step 4: Simplify right side
    5,419.62x = 29,262,332.58
  5. Step 5: Solve for x
    x = 29,262,332.58/5,419.62
  6. Step 6: Final answer
    x = 5,399.33

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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.