Home / 7,860.23-11,780.28-3,691.02

Finding the Fourth Proportional to 7,860.23, 11,780.28 and 3,691.02

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Solution

The fourth proportional to 7,860.23, 11,780.28 and 3,691.02 is: 5,531.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.23 : 11,780.28 = 3,691.02 : x
  2. Step 2: Convert to fraction form
    7,860.23/11,780.28 = 3,691.02/x
  3. Step 3: Cross multiply
    7,860.23x = 11,780.28 × 3,691.02
  4. Step 4: Simplify right side
    7,860.23x = 43,481,249.09
  5. Step 5: Solve for x
    x = 43,481,249.09/7,860.23
  6. Step 6: Final answer
    x = 5,531.81

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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.