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Finding the Fourth Proportional to 3,167.40, 4,747.21 and 1,777.82

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Solution

The fourth proportional to 3,167.40, 4,747.21 and 1,777.82 is: 2,664.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.40 : 4,747.21 = 1,777.82 : x
  2. Step 2: Convert to fraction form
    3,167.40/4,747.21 = 1,777.82/x
  3. Step 3: Cross multiply
    3,167.40x = 4,747.21 × 1,777.82
  4. Step 4: Simplify right side
    3,167.40x = 8,439,692.31
  5. Step 5: Solve for x
    x = 8,439,692.31/3,167.40
  6. Step 6: Final answer
    x = 2,664.55

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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.