Home / 3,836.40-5,751.44-1,988.04

Finding the Fourth Proportional to 3,836.40, 5,751.44 and 1,988.04

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Solution

The fourth proportional to 3,836.40, 5,751.44 and 1,988.04 is: 2,980.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.40 : 5,751.44 = 1,988.04 : x
  2. Step 2: Convert to fraction form
    3,836.40/5,751.44 = 1,988.04/x
  3. Step 3: Cross multiply
    3,836.40x = 5,751.44 × 1,988.04
  4. Step 4: Simplify right side
    3,836.40x = 11,434,092.78
  5. Step 5: Solve for x
    x = 11,434,092.78/3,836.40
  6. Step 6: Final answer
    x = 2,980.42

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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.