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Finding the Fourth Proportional to 3,076.38, 4,614.57 and 767.88

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Solution

The fourth proportional to 3,076.38, 4,614.57 and 767.88 is: 1,151.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.38 : 4,614.57 = 767.88 : x
  2. Step 2: Convert to fraction form
    3,076.38/4,614.57 = 767.88/x
  3. Step 3: Cross multiply
    3,076.38x = 4,614.57 × 767.88
  4. Step 4: Simplify right side
    3,076.38x = 3,543,436.01
  5. Step 5: Solve for x
    x = 3,543,436.01/3,076.38
  6. Step 6: Final answer
    x = 1,151.82

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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.