Home / 3,119.82-4,675.80-2,728.89

Finding the Fourth Proportional to 3,119.82, 4,675.80 and 2,728.89

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Solution

The fourth proportional to 3,119.82, 4,675.80 and 2,728.89 is: 4,089.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.82 : 4,675.80 = 2,728.89 : x
  2. Step 2: Convert to fraction form
    3,119.82/4,675.80 = 2,728.89/x
  3. Step 3: Cross multiply
    3,119.82x = 4,675.80 × 2,728.89
  4. Step 4: Simplify right side
    3,119.82x = 12,759,743.86
  5. Step 5: Solve for x
    x = 12,759,743.86/3,119.82
  6. Step 6: Final answer
    x = 4,089.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.