Home / 5,149.80-7,721.82-2,071.08

Finding the Fourth Proportional to 5,149.80, 7,721.82 and 2,071.08

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Solution

The fourth proportional to 5,149.80, 7,721.82 and 2,071.08 is: 3,105.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.80 : 7,721.82 = 2,071.08 : x
  2. Step 2: Convert to fraction form
    5,149.80/7,721.82 = 2,071.08/x
  3. Step 3: Cross multiply
    5,149.80x = 7,721.82 × 2,071.08
  4. Step 4: Simplify right side
    5,149.80x = 15,992,506.97
  5. Step 5: Solve for x
    x = 15,992,506.97/5,149.80
  6. Step 6: Final answer
    x = 3,105.46

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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.