Home / 7,821.13-11,735.55-3,661.42

Finding the Fourth Proportional to 7,821.13, 11,735.55 and 3,661.42

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Solution

The fourth proportional to 7,821.13, 11,735.55 and 3,661.42 is: 5,493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.13 : 11,735.55 = 3,661.42 : x
  2. Step 2: Convert to fraction form
    7,821.13/11,735.55 = 3,661.42/x
  3. Step 3: Cross multiply
    7,821.13x = 11,735.55 × 3,661.42
  4. Step 4: Simplify right side
    7,821.13x = 42,968,777.48
  5. Step 5: Solve for x
    x = 42,968,777.48/7,821.13
  6. Step 6: Final answer
    x = 5,493.93

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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.