Home / 5,190.20-7,785.36-2,997.60

Finding the Fourth Proportional to 5,190.20, 7,785.36 and 2,997.60

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Solution

The fourth proportional to 5,190.20, 7,785.36 and 2,997.60 is: 4,496.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.20 : 7,785.36 = 2,997.60 : x
  2. Step 2: Convert to fraction form
    5,190.20/7,785.36 = 2,997.60/x
  3. Step 3: Cross multiply
    5,190.20x = 7,785.36 × 2,997.60
  4. Step 4: Simplify right side
    5,190.20x = 23,337,395.14
  5. Step 5: Solve for x
    x = 23,337,395.14/5,190.20
  6. Step 6: Final answer
    x = 4,496.43

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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.