Home / 2,129.70-3,190.50-1,250.04

Finding the Fourth Proportional to 2,129.70, 3,190.50 and 1,250.04

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Solution

The fourth proportional to 2,129.70, 3,190.50 and 1,250.04 is: 1,872.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.70 : 3,190.50 = 1,250.04 : x
  2. Step 2: Convert to fraction form
    2,129.70/3,190.50 = 1,250.04/x
  3. Step 3: Cross multiply
    2,129.70x = 3,190.50 × 1,250.04
  4. Step 4: Simplify right side
    2,129.70x = 3,988,252.62
  5. Step 5: Solve for x
    x = 3,988,252.62/2,129.70
  6. Step 6: Final answer
    x = 1,872.68

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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.