Home / 3,855.12-5,320.04-2,176.50

Finding the Fourth Proportional to 3,855.12, 5,320.04 and 2,176.50

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Solution

The fourth proportional to 3,855.12, 5,320.04 and 2,176.50 is: 3,003.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.12 : 5,320.04 = 2,176.50 : x
  2. Step 2: Convert to fraction form
    3,855.12/5,320.04 = 2,176.50/x
  3. Step 3: Cross multiply
    3,855.12x = 5,320.04 × 2,176.50
  4. Step 4: Simplify right side
    3,855.12x = 11,579,067.06
  5. Step 5: Solve for x
    x = 11,579,067.06/3,855.12
  6. Step 6: Final answer
    x = 3,003.56

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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.