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Finding the Fourth Proportional to 3,999.04, 5,997.12 and 1,690.72

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Solution

The fourth proportional to 3,999.04, 5,997.12 and 1,690.72 is: 2,535.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.04 : 5,997.12 = 1,690.72 : x
  2. Step 2: Convert to fraction form
    3,999.04/5,997.12 = 1,690.72/x
  3. Step 3: Cross multiply
    3,999.04x = 5,997.12 × 1,690.72
  4. Step 4: Simplify right side
    3,999.04x = 10,139,450.73
  5. Step 5: Solve for x
    x = 10,139,450.73/3,999.04
  6. Step 6: Final answer
    x = 2,535.47

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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.