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Finding the Fourth Proportional to 2,993.48, 4,485.90 and 1,692.20

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Solution

The fourth proportional to 2,993.48, 4,485.90 and 1,692.20 is: 2,535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,993.48 : 4,485.90 = 1,692.20 : x
  2. Step 2: Convert to fraction form
    2,993.48/4,485.90 = 1,692.20/x
  3. Step 3: Cross multiply
    2,993.48x = 4,485.90 × 1,692.20
  4. Step 4: Simplify right side
    2,993.48x = 7,591,039.98
  5. Step 5: Solve for x
    x = 7,591,039.98/2,993.48
  6. Step 6: Final answer
    x = 2,535.86

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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.