Home / 3,517.05-5,275.71-919.92

Finding the Fourth Proportional to 3,517.05, 5,275.71 and 919.92

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Solution

The fourth proportional to 3,517.05, 5,275.71 and 919.92 is: 1,379.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,517.05 : 5,275.71 = 919.92 : x
  2. Step 2: Convert to fraction form
    3,517.05/5,275.71 = 919.92/x
  3. Step 3: Cross multiply
    3,517.05x = 5,275.71 × 919.92
  4. Step 4: Simplify right side
    3,517.05x = 4,853,231.14
  5. Step 5: Solve for x
    x = 4,853,231.14/3,517.05
  6. Step 6: Final answer
    x = 1,379.92

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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.