Home / 3,791.12-5,231.04-2,219

Finding the Fourth Proportional to 3,791.12, 5,231.04 and 2,219

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Solution

The fourth proportional to 3,791.12, 5,231.04 and 2,219 is: 3,061.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.12 : 5,231.04 = 2,219 : x
  2. Step 2: Convert to fraction form
    3,791.12/5,231.04 = 2,219/x
  3. Step 3: Cross multiply
    3,791.12x = 5,231.04 × 2,219
  4. Step 4: Simplify right side
    3,791.12x = 11,607,677.76
  5. Step 5: Solve for x
    x = 11,607,677.76/3,791.12
  6. Step 6: Final answer
    x = 3,061.81

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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.