Home / 2,125.17-3,188.12-664.04

Finding the Fourth Proportional to 2,125.17, 3,188.12 and 664.04

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Solution

The fourth proportional to 2,125.17, 3,188.12 and 664.04 is: 996.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.17 : 3,188.12 = 664.04 : x
  2. Step 2: Convert to fraction form
    2,125.17/3,188.12 = 664.04/x
  3. Step 3: Cross multiply
    2,125.17x = 3,188.12 × 664.04
  4. Step 4: Simplify right side
    2,125.17x = 2,117,019.94
  5. Step 5: Solve for x
    x = 2,117,019.94/2,125.17
  6. Step 6: Final answer
    x = 996.16

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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.