Home / 7,991.09-11,987.99-2,443.14

Finding the Fourth Proportional to 7,991.09, 11,987.99 and 2,443.14

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Solution

The fourth proportional to 7,991.09, 11,987.99 and 2,443.14 is: 3,665.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.09 : 11,987.99 = 2,443.14 : x
  2. Step 2: Convert to fraction form
    7,991.09/11,987.99 = 2,443.14/x
  3. Step 3: Cross multiply
    7,991.09x = 11,987.99 × 2,443.14
  4. Step 4: Simplify right side
    7,991.09x = 29,288,280.72
  5. Step 5: Solve for x
    x = 29,288,280.72/7,991.09
  6. Step 6: Final answer
    x = 3,665.12

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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.