Home / 5,181.80-7,761.72-4,190.36

Finding the Fourth Proportional to 5,181.80, 7,761.72 and 4,190.36

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Solution

The fourth proportional to 5,181.80, 7,761.72 and 4,190.36 is: 6,276.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.80 : 7,761.72 = 4,190.36 : x
  2. Step 2: Convert to fraction form
    5,181.80/7,761.72 = 4,190.36/x
  3. Step 3: Cross multiply
    5,181.80x = 7,761.72 × 4,190.36
  4. Step 4: Simplify right side
    5,181.80x = 32,524,401.02
  5. Step 5: Solve for x
    x = 32,524,401.02/5,181.80
  6. Step 6: Final answer
    x = 6,276.66

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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.