Home / 3,825.09-5,278.70-2,123.53

Finding the Fourth Proportional to 3,825.09, 5,278.70 and 2,123.53

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Solution

The fourth proportional to 3,825.09, 5,278.70 and 2,123.53 is: 2,930.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,825.09 : 5,278.70 = 2,123.53 : x
  2. Step 2: Convert to fraction form
    3,825.09/5,278.70 = 2,123.53/x
  3. Step 3: Cross multiply
    3,825.09x = 5,278.70 × 2,123.53
  4. Step 4: Simplify right side
    3,825.09x = 11,209,469.92
  5. Step 5: Solve for x
    x = 11,209,469.92/3,825.09
  6. Step 6: Final answer
    x = 2,930.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.