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Finding the Fourth Proportional to 2,608.35, 3,912.56 and 943.65

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Solution

The fourth proportional to 2,608.35, 3,912.56 and 943.65 is: 1,415.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608.35 : 3,912.56 = 943.65 : x
  2. Step 2: Convert to fraction form
    2,608.35/3,912.56 = 943.65/x
  3. Step 3: Cross multiply
    2,608.35x = 3,912.56 × 943.65
  4. Step 4: Simplify right side
    2,608.35x = 3,692,082.53
  5. Step 5: Solve for x
    x = 3,692,082.53/2,608.35
  6. Step 6: Final answer
    x = 1,415.49

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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.