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Finding the Fourth Proportional to 8,009.92, 12,014.88 and 3,078.64

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Solution

The fourth proportional to 8,009.92, 12,014.88 and 3,078.64 is: 4,617.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,009.92 : 12,014.88 = 3,078.64 : x
  2. Step 2: Convert to fraction form
    8,009.92/12,014.88 = 3,078.64/x
  3. Step 3: Cross multiply
    8,009.92x = 12,014.88 × 3,078.64
  4. Step 4: Simplify right side
    8,009.92x = 36,989,490.16
  5. Step 5: Solve for x
    x = 36,989,490.16/8,009.92
  6. Step 6: Final answer
    x = 4,617.96

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Similar ratio
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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.