Home / 5,119.39-7,680.08-1,999.27

Finding the Fourth Proportional to 5,119.39, 7,680.08 and 1,999.27

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Solution

The fourth proportional to 5,119.39, 7,680.08 and 1,999.27 is: 2,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.39 : 7,680.08 = 1,999.27 : x
  2. Step 2: Convert to fraction form
    5,119.39/7,680.08 = 1,999.27/x
  3. Step 3: Cross multiply
    5,119.39x = 7,680.08 × 1,999.27
  4. Step 4: Simplify right side
    5,119.39x = 15,354,553.54
  5. Step 5: Solve for x
    x = 15,354,553.54/5,119.39
  6. Step 6: Final answer
    x = 2,999.29

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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.