Home / 7,999.43-11,998.31-2,155.68

Finding the Fourth Proportional to 7,999.43, 11,998.31 and 2,155.68

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Solution

The fourth proportional to 7,999.43, 11,998.31 and 2,155.68 is: 3,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.43 : 11,998.31 = 2,155.68 : x
  2. Step 2: Convert to fraction form
    7,999.43/11,998.31 = 2,155.68/x
  3. Step 3: Cross multiply
    7,999.43x = 11,998.31 × 2,155.68
  4. Step 4: Simplify right side
    7,999.43x = 25,864,506.12
  5. Step 5: Solve for x
    x = 25,864,506.12/7,999.43
  6. Step 6: Final answer
    x = 3,233.30

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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.