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Finding the Fourth Proportional to 3,999.78, 6,002.10 and 2,685.56

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Solution

The fourth proportional to 3,999.78, 6,002.10 and 2,685.56 is: 4,029.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.78 : 6,002.10 = 2,685.56 : x
  2. Step 2: Convert to fraction form
    3,999.78/6,002.10 = 2,685.56/x
  3. Step 3: Cross multiply
    3,999.78x = 6,002.10 × 2,685.56
  4. Step 4: Simplify right side
    3,999.78x = 16,118,969.67
  5. Step 5: Solve for x
    x = 16,118,969.67/3,999.78
  6. Step 6: Final answer
    x = 4,029.96

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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.