Home / 3,825.55-5,279.49-2,146.87

Finding the Fourth Proportional to 3,825.55, 5,279.49 and 2,146.87

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Solution

The fourth proportional to 3,825.55, 5,279.49 and 2,146.87 is: 2,962.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,825.55 : 5,279.49 = 2,146.87 : x
  2. Step 2: Convert to fraction form
    3,825.55/5,279.49 = 2,146.87/x
  3. Step 3: Cross multiply
    3,825.55x = 5,279.49 × 2,146.87
  4. Step 4: Simplify right side
    3,825.55x = 11,334,378.70
  5. Step 5: Solve for x
    x = 11,334,378.70/3,825.55
  6. Step 6: Final answer
    x = 2,962.81

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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.