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Finding the Fourth Proportional to 8,385.86, 12,576.54 and 3,994.58

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Solution

The fourth proportional to 8,385.86, 12,576.54 and 3,994.58 is: 5,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.86 : 12,576.54 = 3,994.58 : x
  2. Step 2: Convert to fraction form
    8,385.86/12,576.54 = 3,994.58/x
  3. Step 3: Cross multiply
    8,385.86x = 12,576.54 × 3,994.58
  4. Step 4: Simplify right side
    8,385.86x = 50,237,995.15
  5. Step 5: Solve for x
    x = 50,237,995.15/8,385.86
  6. Step 6: Final answer
    x = 5,990.80

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Half scale
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Double scale
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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.