Home / 7,105.80-9,805.70-3,961.96

Finding the Fourth Proportional to 7,105.80, 9,805.70 and 3,961.96

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Solution

The fourth proportional to 7,105.80, 9,805.70 and 3,961.96 is: 5,467.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,105.80 : 9,805.70 = 3,961.96 : x
  2. Step 2: Convert to fraction form
    7,105.80/9,805.70 = 3,961.96/x
  3. Step 3: Cross multiply
    7,105.80x = 9,805.70 × 3,961.96
  4. Step 4: Simplify right side
    7,105.80x = 38,849,791.17
  5. Step 5: Solve for x
    x = 38,849,791.17/7,105.80
  6. Step 6: Final answer
    x = 5,467.34

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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.