Home / 2,125.47-3,190.05-827.85

Finding the Fourth Proportional to 2,125.47, 3,190.05 and 827.85

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Solution

The fourth proportional to 2,125.47, 3,190.05 and 827.85 is: 1,242.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.47 : 3,190.05 = 827.85 : x
  2. Step 2: Convert to fraction form
    2,125.47/3,190.05 = 827.85/x
  3. Step 3: Cross multiply
    2,125.47x = 3,190.05 × 827.85
  4. Step 4: Simplify right side
    2,125.47x = 2,640,882.89
  5. Step 5: Solve for x
    x = 2,640,882.89/2,125.47
  6. Step 6: Final answer
    x = 1,242.49

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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.