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Finding the Fourth Proportional to 2,748.30, 4,122.64 and 994.34

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Solution

The fourth proportional to 2,748.30, 4,122.64 and 994.34 is: 1,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.30 : 4,122.64 = 994.34 : x
  2. Step 2: Convert to fraction form
    2,748.30/4,122.64 = 994.34/x
  3. Step 3: Cross multiply
    2,748.30x = 4,122.64 × 994.34
  4. Step 4: Simplify right side
    2,748.30x = 4,099,305.86
  5. Step 5: Solve for x
    x = 4,099,305.86/2,748.30
  6. Step 6: Final answer
    x = 1,491.58

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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.