Home / 5,245.30-7,238.51-2,855.28

Finding the Fourth Proportional to 5,245.30, 7,238.51 and 2,855.28

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Solution

The fourth proportional to 5,245.30, 7,238.51 and 2,855.28 is: 3,940.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.30 : 7,238.51 = 2,855.28 : x
  2. Step 2: Convert to fraction form
    5,245.30/7,238.51 = 2,855.28/x
  3. Step 3: Cross multiply
    5,245.30x = 7,238.51 × 2,855.28
  4. Step 4: Simplify right side
    5,245.30x = 20,667,979.97
  5. Step 5: Solve for x
    x = 20,667,979.97/5,245.30
  6. Step 6: Final answer
    x = 3,940.29

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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.