Home / 3,856.55-5,322.11-2,177.82

Finding the Fourth Proportional to 3,856.55, 5,322.11 and 2,177.82

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Solution

The fourth proportional to 3,856.55, 5,322.11 and 2,177.82 is: 3,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.55 : 5,322.11 = 2,177.82 : x
  2. Step 2: Convert to fraction form
    3,856.55/5,322.11 = 2,177.82/x
  3. Step 3: Cross multiply
    3,856.55x = 5,322.11 × 2,177.82
  4. Step 4: Simplify right side
    3,856.55x = 11,590,586.71
  5. Step 5: Solve for x
    x = 11,590,586.71/3,856.55
  6. Step 6: Final answer
    x = 3,005.43

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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.