Home / 5,128.21-7,692.78-2,008.45

Finding the Fourth Proportional to 5,128.21, 7,692.78 and 2,008.45

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Solution

The fourth proportional to 5,128.21, 7,692.78 and 2,008.45 is: 3,012.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.21 : 7,692.78 = 2,008.45 : x
  2. Step 2: Convert to fraction form
    5,128.21/7,692.78 = 2,008.45/x
  3. Step 3: Cross multiply
    5,128.21x = 7,692.78 × 2,008.45
  4. Step 4: Simplify right side
    5,128.21x = 15,450,563.99
  5. Step 5: Solve for x
    x = 15,450,563.99/5,128.21
  6. Step 6: Final answer
    x = 3,012.86

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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.