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Finding the Fourth Proportional to 4,605.40, 6,908.10 and 3,997.90

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Solution

The fourth proportional to 4,605.40, 6,908.10 and 3,997.90 is: 5,996.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,605.40 : 6,908.10 = 3,997.90 : x
  2. Step 2: Convert to fraction form
    4,605.40/6,908.10 = 3,997.90/x
  3. Step 3: Cross multiply
    4,605.40x = 6,908.10 × 3,997.90
  4. Step 4: Simplify right side
    4,605.40x = 27,617,892.99
  5. Step 5: Solve for x
    x = 27,617,892.99/4,605.40
  6. Step 6: Final answer
    x = 5,996.85

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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.