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Finding the Fourth Proportional to 7,904.68, 11,917.03 and 7,481.32

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Solution

The fourth proportional to 7,904.68, 11,917.03 and 7,481.32 is: 11,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,904.68 : 11,917.03 = 7,481.32 : x
  2. Step 2: Convert to fraction form
    7,904.68/11,917.03 = 7,481.32/x
  3. Step 3: Cross multiply
    7,904.68x = 11,917.03 × 7,481.32
  4. Step 4: Simplify right side
    7,904.68x = 89,155,114.88
  5. Step 5: Solve for x
    x = 89,155,114.88/7,904.68
  6. Step 6: Final answer
    x = 11,278.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.