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Finding the Fourth Proportional to 7,863.60, 11,794.62 and 2,669.40

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Solution

The fourth proportional to 7,863.60, 11,794.62 and 2,669.40 is: 4,003.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.60 : 11,794.62 = 2,669.40 : x
  2. Step 2: Convert to fraction form
    7,863.60/11,794.62 = 2,669.40/x
  3. Step 3: Cross multiply
    7,863.60x = 11,794.62 × 2,669.40
  4. Step 4: Simplify right side
    7,863.60x = 31,484,558.63
  5. Step 5: Solve for x
    x = 31,484,558.63/7,863.60
  6. Step 6: Final answer
    x = 4,003.84

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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.