Home / 5,179.88-7,152.96-3,320.12

Finding the Fourth Proportional to 5,179.88, 7,152.96 and 3,320.12

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Solution

The fourth proportional to 5,179.88, 7,152.96 and 3,320.12 is: 4,584.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.88 : 7,152.96 = 3,320.12 : x
  2. Step 2: Convert to fraction form
    5,179.88/7,152.96 = 3,320.12/x
  3. Step 3: Cross multiply
    5,179.88x = 7,152.96 × 3,320.12
  4. Step 4: Simplify right side
    5,179.88x = 23,748,685.56
  5. Step 5: Solve for x
    x = 23,748,685.56/5,179.88
  6. Step 6: Final answer
    x = 4,584.79

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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.