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Finding the Fourth Proportional to 4,976.44, 7,464.16 and 1,278.56

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Solution

The fourth proportional to 4,976.44, 7,464.16 and 1,278.56 is: 1,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,976.44 : 7,464.16 = 1,278.56 : x
  2. Step 2: Convert to fraction form
    4,976.44/7,464.16 = 1,278.56/x
  3. Step 3: Cross multiply
    4,976.44x = 7,464.16 × 1,278.56
  4. Step 4: Simplify right side
    4,976.44x = 9,543,376.41
  5. Step 5: Solve for x
    x = 9,543,376.41/4,976.44
  6. Step 6: Final answer
    x = 1,917.71

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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.