Home / 5,181.18-7,149.77-2,942.76

Finding the Fourth Proportional to 5,181.18, 7,149.77 and 2,942.76

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Solution

The fourth proportional to 5,181.18, 7,149.77 and 2,942.76 is: 4,060.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.18 : 7,149.77 = 2,942.76 : x
  2. Step 2: Convert to fraction form
    5,181.18/7,149.77 = 2,942.76/x
  3. Step 3: Cross multiply
    5,181.18x = 7,149.77 × 2,942.76
  4. Step 4: Simplify right side
    5,181.18x = 21,040,080.30
  5. Step 5: Solve for x
    x = 21,040,080.30/5,181.18
  6. Step 6: Final answer
    x = 4,060.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.