Home / 3,855.20-5,320.08-2,176.56

Finding the Fourth Proportional to 3,855.20, 5,320.08 and 2,176.56

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Solution

The fourth proportional to 3,855.20, 5,320.08 and 2,176.56 is: 3,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.20 : 5,320.08 = 2,176.56 : x
  2. Step 2: Convert to fraction form
    3,855.20/5,320.08 = 2,176.56/x
  3. Step 3: Cross multiply
    3,855.20x = 5,320.08 × 2,176.56
  4. Step 4: Simplify right side
    3,855.20x = 11,579,473.32
  5. Step 5: Solve for x
    x = 11,579,473.32/3,855.20
  6. Step 6: Final answer
    x = 3,003.60

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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.