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Finding the Fourth Proportional to 5,129.95, 7,692.18 and 2,662.28

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Solution

The fourth proportional to 5,129.95, 7,692.18 and 2,662.28 is: 3,992.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.95 : 7,692.18 = 2,662.28 : x
  2. Step 2: Convert to fraction form
    5,129.95/7,692.18 = 2,662.28/x
  3. Step 3: Cross multiply
    5,129.95x = 7,692.18 × 2,662.28
  4. Step 4: Simplify right side
    5,129.95x = 20,478,736.97
  5. Step 5: Solve for x
    x = 20,478,736.97/5,129.95
  6. Step 6: Final answer
    x = 3,992.00

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1.5x scale

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.