Home / 5,119.36-7,680.66-2,652.64

Finding the Fourth Proportional to 5,119.36, 7,680.66 and 2,652.64

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Solution

The fourth proportional to 5,119.36, 7,680.66 and 2,652.64 is: 3,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.36 : 7,680.66 = 2,652.64 : x
  2. Step 2: Convert to fraction form
    5,119.36/7,680.66 = 2,652.64/x
  3. Step 3: Cross multiply
    5,119.36x = 7,680.66 × 2,652.64
  4. Step 4: Simplify right side
    5,119.36x = 20,374,025.94
  5. Step 5: Solve for x
    x = 20,374,025.94/5,119.36
  6. Step 6: Final answer
    x = 3,979.80

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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.