Home / 3,869.84-5,340.62-2,191.42

Finding the Fourth Proportional to 3,869.84, 5,340.62 and 2,191.42

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Solution

The fourth proportional to 3,869.84, 5,340.62 and 2,191.42 is: 3,024.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.84 : 5,340.62 = 2,191.42 : x
  2. Step 2: Convert to fraction form
    3,869.84/5,340.62 = 2,191.42/x
  3. Step 3: Cross multiply
    3,869.84x = 5,340.62 × 2,191.42
  4. Step 4: Simplify right side
    3,869.84x = 11,703,503.82
  5. Step 5: Solve for x
    x = 11,703,503.82/3,869.84
  6. Step 6: Final answer
    x = 3,024.29

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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.