Home / 3,856.42-5,322.33-2,177.90

Finding the Fourth Proportional to 3,856.42, 5,322.33 and 2,177.90

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Solution

The fourth proportional to 3,856.42, 5,322.33 and 2,177.90 is: 3,005.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.42 : 5,322.33 = 2,177.90 : x
  2. Step 2: Convert to fraction form
    3,856.42/5,322.33 = 2,177.90/x
  3. Step 3: Cross multiply
    3,856.42x = 5,322.33 × 2,177.90
  4. Step 4: Simplify right side
    3,856.42x = 11,591,502.51
  5. Step 5: Solve for x
    x = 11,591,502.51/3,856.42
  6. Step 6: Final answer
    x = 3,005.77

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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.