Home / 7,688.85-11,539.46-3,992.14

Finding the Fourth Proportional to 7,688.85, 11,539.46 and 3,992.14

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Solution

The fourth proportional to 7,688.85, 11,539.46 and 3,992.14 is: 5,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.85 : 11,539.46 = 3,992.14 : x
  2. Step 2: Convert to fraction form
    7,688.85/11,539.46 = 3,992.14/x
  3. Step 3: Cross multiply
    7,688.85x = 11,539.46 × 3,992.14
  4. Step 4: Simplify right side
    7,688.85x = 46,067,139.84
  5. Step 5: Solve for x
    x = 46,067,139.84/7,688.85
  6. Step 6: Final answer
    x = 5,991.42

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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.