Home / 7,119.72-9,825.24-3,975.96

Finding the Fourth Proportional to 7,119.72, 9,825.24 and 3,975.96

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Solution

The fourth proportional to 7,119.72, 9,825.24 and 3,975.96 is: 5,486.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.72 : 9,825.24 = 3,975.96 : x
  2. Step 2: Convert to fraction form
    7,119.72/9,825.24 = 3,975.96/x
  3. Step 3: Cross multiply
    7,119.72x = 9,825.24 × 3,975.96
  4. Step 4: Simplify right side
    7,119.72x = 39,064,761.23
  5. Step 5: Solve for x
    x = 39,064,761.23/7,119.72
  6. Step 6: Final answer
    x = 5,486.84

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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.