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Finding the Fourth Proportional to 6,739.20, 10,119.60 and 5,097.60

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Solution

The fourth proportional to 6,739.20, 10,119.60 and 5,097.60 is: 7,654.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,739.20 : 10,119.60 = 5,097.60 : x
  2. Step 2: Convert to fraction form
    6,739.20/10,119.60 = 5,097.60/x
  3. Step 3: Cross multiply
    6,739.20x = 10,119.60 × 5,097.60
  4. Step 4: Simplify right side
    6,739.20x = 51,585,672.96
  5. Step 5: Solve for x
    x = 51,585,672.96/6,739.20
  6. Step 6: Final answer
    x = 7,654.57

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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.