Home / 2,125.14-3,188.02-664.42

Finding the Fourth Proportional to 2,125.14, 3,188.02 and 664.42

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Solution

The fourth proportional to 2,125.14, 3,188.02 and 664.42 is: 996.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.14 : 3,188.02 = 664.42 : x
  2. Step 2: Convert to fraction form
    2,125.14/3,188.02 = 664.42/x
  3. Step 3: Cross multiply
    2,125.14x = 3,188.02 × 664.42
  4. Step 4: Simplify right side
    2,125.14x = 2,118,184.25
  5. Step 5: Solve for x
    x = 2,118,184.25/2,125.14
  6. Step 6: Final answer
    x = 996.73

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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.