Home / 3,856.82-5,322.37-2,178.23

Finding the Fourth Proportional to 3,856.82, 5,322.37 and 2,178.23

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Solution

The fourth proportional to 3,856.82, 5,322.37 and 2,178.23 is: 3,005.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.82 : 5,322.37 = 2,178.23 : x
  2. Step 2: Convert to fraction form
    3,856.82/5,322.37 = 2,178.23/x
  3. Step 3: Cross multiply
    3,856.82x = 5,322.37 × 2,178.23
  4. Step 4: Simplify right side
    3,856.82x = 11,593,346.01
  5. Step 5: Solve for x
    x = 11,593,346.01/3,856.82
  6. Step 6: Final answer
    x = 3,005.93

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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.