Home / 7,181.28-10,768.08-4,220.76

Finding the Fourth Proportional to 7,181.28, 10,768.08 and 4,220.76

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Solution

The fourth proportional to 7,181.28, 10,768.08 and 4,220.76 is: 6,328.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.28 : 10,768.08 = 4,220.76 : x
  2. Step 2: Convert to fraction form
    7,181.28/10,768.08 = 4,220.76/x
  3. Step 3: Cross multiply
    7,181.28x = 10,768.08 × 4,220.76
  4. Step 4: Simplify right side
    7,181.28x = 45,449,481.34
  5. Step 5: Solve for x
    x = 45,449,481.34/7,181.28
  6. Step 6: Final answer
    x = 6,328.88

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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.