Home / 3,489.30-5,237.91-2,191.50

Finding the Fourth Proportional to 3,489.30, 5,237.91 and 2,191.50

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Solution

The fourth proportional to 3,489.30, 5,237.91 and 2,191.50 is: 3,289.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.30 : 5,237.91 = 2,191.50 : x
  2. Step 2: Convert to fraction form
    3,489.30/5,237.91 = 2,191.50/x
  3. Step 3: Cross multiply
    3,489.30x = 5,237.91 × 2,191.50
  4. Step 4: Simplify right side
    3,489.30x = 11,478,879.77
  5. Step 5: Solve for x
    x = 11,478,879.77/3,489.30
  6. Step 6: Final answer
    x = 3,289.74

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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.