Home / 3,824.78-5,278.40-2,146.72

Finding the Fourth Proportional to 3,824.78, 5,278.40 and 2,146.72

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Solution

The fourth proportional to 3,824.78, 5,278.40 and 2,146.72 is: 2,962.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,824.78 : 5,278.40 = 2,146.72 : x
  2. Step 2: Convert to fraction form
    3,824.78/5,278.40 = 2,146.72/x
  3. Step 3: Cross multiply
    3,824.78x = 5,278.40 × 2,146.72
  4. Step 4: Simplify right side
    3,824.78x = 11,331,246.85
  5. Step 5: Solve for x
    x = 11,331,246.85/3,824.78
  6. Step 6: Final answer
    x = 2,962.59

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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.