Home / 3,855.61-5,320.43-2,177.42

Finding the Fourth Proportional to 3,855.61, 5,320.43 and 2,177.42

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Solution

The fourth proportional to 3,855.61, 5,320.43 and 2,177.42 is: 3,004.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.61 : 5,320.43 = 2,177.42 : x
  2. Step 2: Convert to fraction form
    3,855.61/5,320.43 = 2,177.42/x
  3. Step 3: Cross multiply
    3,855.61x = 5,320.43 × 2,177.42
  4. Step 4: Simplify right side
    3,855.61x = 11,584,799.80
  5. Step 5: Solve for x
    x = 11,584,799.80/3,855.61
  6. Step 6: Final answer
    x = 3,004.66

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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.