Home / 5,231.71-7,221.36-3,107.59

Finding the Fourth Proportional to 5,231.71, 7,221.36 and 3,107.59

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Solution

The fourth proportional to 5,231.71, 7,221.36 and 3,107.59 is: 4,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.71 : 7,221.36 = 3,107.59 : x
  2. Step 2: Convert to fraction form
    5,231.71/7,221.36 = 3,107.59/x
  3. Step 3: Cross multiply
    5,231.71x = 7,221.36 × 3,107.59
  4. Step 4: Simplify right side
    5,231.71x = 22,440,974.48
  5. Step 5: Solve for x
    x = 22,440,974.48/5,231.71
  6. Step 6: Final answer
    x = 4,289.41

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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.