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Finding the Fourth Proportional to 2,923.75, 4,385.92 and 949.30

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Solution

The fourth proportional to 2,923.75, 4,385.92 and 949.30 is: 1,424.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,923.75 : 4,385.92 = 949.30 : x
  2. Step 2: Convert to fraction form
    2,923.75/4,385.92 = 949.30/x
  3. Step 3: Cross multiply
    2,923.75x = 4,385.92 × 949.30
  4. Step 4: Simplify right side
    2,923.75x = 4,163,537.41
  5. Step 5: Solve for x
    x = 4,163,537.41/2,923.75
  6. Step 6: Final answer
    x = 1,424.04

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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.