Home / 2,125.23-3,188.18-664.50

Finding the Fourth Proportional to 2,125.23, 3,188.18 and 664.50

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Solution

The fourth proportional to 2,125.23, 3,188.18 and 664.50 is: 996.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.23 : 3,188.18 = 664.50 : x
  2. Step 2: Convert to fraction form
    2,125.23/3,188.18 = 664.50/x
  3. Step 3: Cross multiply
    2,125.23x = 3,188.18 × 664.50
  4. Step 4: Simplify right side
    2,125.23x = 2,118,542.29
  5. Step 5: Solve for x
    x = 2,118,542.29/2,125.23
  6. Step 6: Final answer
    x = 996.85

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1.5x scale

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.