Home / 3,835.78-5,293.35-2,179.78

Finding the Fourth Proportional to 3,835.78, 5,293.35 and 2,179.78

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Solution

The fourth proportional to 3,835.78, 5,293.35 and 2,179.78 is: 3,008.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,835.78 : 5,293.35 = 2,179.78 : x
  2. Step 2: Convert to fraction form
    3,835.78/5,293.35 = 2,179.78/x
  3. Step 3: Cross multiply
    3,835.78x = 5,293.35 × 2,179.78
  4. Step 4: Simplify right side
    3,835.78x = 11,538,338.46
  5. Step 5: Solve for x
    x = 11,538,338.46/3,835.78
  6. Step 6: Final answer
    x = 3,008.08

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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.