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Finding the Fourth Proportional to 8,400.98, 12,604.21 and 4,018.78

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Solution

The fourth proportional to 8,400.98, 12,604.21 and 4,018.78 is: 6,029.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.98 : 12,604.21 = 4,018.78 : x
  2. Step 2: Convert to fraction form
    8,400.98/12,604.21 = 4,018.78/x
  3. Step 3: Cross multiply
    8,400.98x = 12,604.21 × 4,018.78
  4. Step 4: Simplify right side
    8,400.98x = 50,653,552.77
  5. Step 5: Solve for x
    x = 50,653,552.77/8,400.98
  6. Step 6: Final answer
    x = 6,029.48

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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.