Home / 7,939.90-11,909.31-3,009.16

Finding the Fourth Proportional to 7,939.90, 11,909.31 and 3,009.16

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Solution

The fourth proportional to 7,939.90, 11,909.31 and 3,009.16 is: 4,513.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.90 : 11,909.31 = 3,009.16 : x
  2. Step 2: Convert to fraction form
    7,939.90/11,909.31 = 3,009.16/x
  3. Step 3: Cross multiply
    7,939.90x = 11,909.31 × 3,009.16
  4. Step 4: Simplify right side
    7,939.90x = 35,837,019.28
  5. Step 5: Solve for x
    x = 35,837,019.28/7,939.90
  6. Step 6: Final answer
    x = 4,513.54

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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.