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Finding the Fourth Proportional to 7,866.28, 11,799.42 and 2,672.56

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Solution

The fourth proportional to 7,866.28, 11,799.42 and 2,672.56 is: 4,008.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.28 : 11,799.42 = 2,672.56 : x
  2. Step 2: Convert to fraction form
    7,866.28/11,799.42 = 2,672.56/x
  3. Step 3: Cross multiply
    7,866.28x = 11,799.42 × 2,672.56
  4. Step 4: Simplify right side
    7,866.28x = 31,534,657.92
  5. Step 5: Solve for x
    x = 31,534,657.92/7,866.28
  6. Step 6: Final answer
    x = 4,008.84

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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.