Home / 5,190.20-7,785.84-1,727.48

Finding the Fourth Proportional to 5,190.20, 7,785.84 and 1,727.48

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Solution

The fourth proportional to 5,190.20, 7,785.84 and 1,727.48 is: 2,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.20 : 7,785.84 = 1,727.48 : x
  2. Step 2: Convert to fraction form
    5,190.20/7,785.84 = 1,727.48/x
  3. Step 3: Cross multiply
    5,190.20x = 7,785.84 × 1,727.48
  4. Step 4: Simplify right side
    5,190.20x = 13,449,882.88
  5. Step 5: Solve for x
    x = 13,449,882.88/5,190.20
  6. Step 6: Final answer
    x = 2,591.40

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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.