Home / 7,691.86-11,537.79-3,992.18

Finding the Fourth Proportional to 7,691.86, 11,537.79 and 3,992.18

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Solution

The fourth proportional to 7,691.86, 11,537.79 and 3,992.18 is: 5,988.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.86 : 11,537.79 = 3,992.18 : x
  2. Step 2: Convert to fraction form
    7,691.86/11,537.79 = 3,992.18/x
  3. Step 3: Cross multiply
    7,691.86x = 11,537.79 × 3,992.18
  4. Step 4: Simplify right side
    7,691.86x = 46,060,914.52
  5. Step 5: Solve for x
    x = 46,060,914.52/7,691.86
  6. Step 6: Final answer
    x = 5,988.27

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1.5x scale

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.