Home / 3,824.85-5,278.05-2,146.32

Finding the Fourth Proportional to 3,824.85, 5,278.05 and 2,146.32

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Solution

The fourth proportional to 3,824.85, 5,278.05 and 2,146.32 is: 2,961.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,824.85 : 5,278.05 = 2,146.32 : x
  2. Step 2: Convert to fraction form
    3,824.85/5,278.05 = 2,146.32/x
  3. Step 3: Cross multiply
    3,824.85x = 5,278.05 × 2,146.32
  4. Step 4: Simplify right side
    3,824.85x = 11,328,384.28
  5. Step 5: Solve for x
    x = 11,328,384.28/3,824.85
  6. Step 6: Final answer
    x = 2,961.79

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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.