Home / 2,125.24-3,188.17-664.50

Finding the Fourth Proportional to 2,125.24, 3,188.17 and 664.50

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Solution

The fourth proportional to 2,125.24, 3,188.17 and 664.50 is: 996.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.24 : 3,188.17 = 664.50 : x
  2. Step 2: Convert to fraction form
    2,125.24/3,188.17 = 664.50/x
  3. Step 3: Cross multiply
    2,125.24x = 3,188.17 × 664.50
  4. Step 4: Simplify right side
    2,125.24x = 2,118,538.97
  5. Step 5: Solve for x
    x = 2,118,538.97/2,125.24
  6. Step 6: Final answer
    x = 996.85

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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.