Home / 7,171.20-10,741.68-3,278.88

Finding the Fourth Proportional to 7,171.20, 10,741.68 and 3,278.88

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Solution

The fourth proportional to 7,171.20, 10,741.68 and 3,278.88 is: 4,911.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.20 : 10,741.68 = 3,278.88 : x
  2. Step 2: Convert to fraction form
    7,171.20/10,741.68 = 3,278.88/x
  3. Step 3: Cross multiply
    7,171.20x = 10,741.68 × 3,278.88
  4. Step 4: Simplify right side
    7,171.20x = 35,220,679.72
  5. Step 5: Solve for x
    x = 35,220,679.72/7,171.20
  6. Step 6: Final answer
    x = 4,911.41

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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.