Home / 3,611.82-4,985.34-2,119.80

Finding the Fourth Proportional to 3,611.82, 4,985.34 and 2,119.80

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Solution

The fourth proportional to 3,611.82, 4,985.34 and 2,119.80 is: 2,925.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.82 : 4,985.34 = 2,119.80 : x
  2. Step 2: Convert to fraction form
    3,611.82/4,985.34 = 2,119.80/x
  3. Step 3: Cross multiply
    3,611.82x = 4,985.34 × 2,119.80
  4. Step 4: Simplify right side
    3,611.82x = 10,567,923.73
  5. Step 5: Solve for x
    x = 10,567,923.73/3,611.82
  6. Step 6: Final answer
    x = 2,925.93

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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.