Home / 5,212.96-7,193.61-2,855.05

Finding the Fourth Proportional to 5,212.96, 7,193.61 and 2,855.05

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Solution

The fourth proportional to 5,212.96, 7,193.61 and 2,855.05 is: 3,939.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.96 : 7,193.61 = 2,855.05 : x
  2. Step 2: Convert to fraction form
    5,212.96/7,193.61 = 2,855.05/x
  3. Step 3: Cross multiply
    5,212.96x = 7,193.61 × 2,855.05
  4. Step 4: Simplify right side
    5,212.96x = 20,538,116.23
  5. Step 5: Solve for x
    x = 20,538,116.23/5,212.96
  6. Step 6: Final answer
    x = 3,939.82

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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.