Home / 5,115.96-7,676.01-1,996.20

Finding the Fourth Proportional to 5,115.96, 7,676.01 and 1,996.20

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Solution

The fourth proportional to 5,115.96, 7,676.01 and 1,996.20 is: 2,995.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.96 : 7,676.01 = 1,996.20 : x
  2. Step 2: Convert to fraction form
    5,115.96/7,676.01 = 1,996.20/x
  3. Step 3: Cross multiply
    5,115.96x = 7,676.01 × 1,996.20
  4. Step 4: Simplify right side
    5,115.96x = 15,322,851.16
  5. Step 5: Solve for x
    x = 15,322,851.16/5,115.96
  6. Step 6: Final answer
    x = 2,995.11

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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.