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Finding the Fourth Proportional to 2,997.92, 4,496.64 and 917.94

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Solution

The fourth proportional to 2,997.92, 4,496.64 and 917.94 is: 1,376.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.92 : 4,496.64 = 917.94 : x
  2. Step 2: Convert to fraction form
    2,997.92/4,496.64 = 917.94/x
  3. Step 3: Cross multiply
    2,997.92x = 4,496.64 × 917.94
  4. Step 4: Simplify right side
    2,997.92x = 4,127,645.72
  5. Step 5: Solve for x
    x = 4,127,645.72/2,997.92
  6. Step 6: Final answer
    x = 1,376.84

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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.