Home / 6,728.20-10,103.10-5,086.60

Finding the Fourth Proportional to 6,728.20, 10,103.10 and 5,086.60

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Solution

The fourth proportional to 6,728.20, 10,103.10 and 5,086.60 is: 7,638.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,728.20 : 10,103.10 = 5,086.60 : x
  2. Step 2: Convert to fraction form
    6,728.20/10,103.10 = 5,086.60/x
  3. Step 3: Cross multiply
    6,728.20x = 10,103.10 × 5,086.60
  4. Step 4: Simplify right side
    6,728.20x = 51,390,428.46
  5. Step 5: Solve for x
    x = 51,390,428.46/6,728.20
  6. Step 6: Final answer
    x = 7,638.06

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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.