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Finding the Fourth Proportional to 3,096.79, 4,645.19 and 756.79

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Solution

The fourth proportional to 3,096.79, 4,645.19 and 756.79 is: 1,135.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,096.79 : 4,645.19 = 756.79 : x
  2. Step 2: Convert to fraction form
    3,096.79/4,645.19 = 756.79/x
  3. Step 3: Cross multiply
    3,096.79x = 4,645.19 × 756.79
  4. Step 4: Simplify right side
    3,096.79x = 3,515,433.34
  5. Step 5: Solve for x
    x = 3,515,433.34/3,096.79
  6. Step 6: Final answer
    x = 1,135.19

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Double scale
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Similar ratio
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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.