Home / 5,212.80-7,193.70-2,855.04

Finding the Fourth Proportional to 5,212.80, 7,193.70 and 2,855.04

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Solution

The fourth proportional to 5,212.80, 7,193.70 and 2,855.04 is: 3,939.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.80 : 7,193.70 = 2,855.04 : x
  2. Step 2: Convert to fraction form
    5,212.80/7,193.70 = 2,855.04/x
  3. Step 3: Cross multiply
    5,212.80x = 7,193.70 × 2,855.04
  4. Step 4: Simplify right side
    5,212.80x = 20,538,301.25
  5. Step 5: Solve for x
    x = 20,538,301.25/5,212.80
  6. Step 6: Final answer
    x = 3,939.97

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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.