Home / 7,129.12-10,692.85-2,743.51

Finding the Fourth Proportional to 7,129.12, 10,692.85 and 2,743.51

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Solution

The fourth proportional to 7,129.12, 10,692.85 and 2,743.51 is: 4,114.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.12 : 10,692.85 = 2,743.51 : x
  2. Step 2: Convert to fraction form
    7,129.12/10,692.85 = 2,743.51/x
  3. Step 3: Cross multiply
    7,129.12x = 10,692.85 × 2,743.51
  4. Step 4: Simplify right side
    7,129.12x = 29,335,940.90
  5. Step 5: Solve for x
    x = 29,335,940.90/7,129.12
  6. Step 6: Final answer
    x = 4,114.95

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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.