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Finding the Fourth Proportional to 7,760.96, 11,634.96 and 7,145.92

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Solution

The fourth proportional to 7,760.96, 11,634.96 and 7,145.92 is: 10,712.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,760.96 : 11,634.96 = 7,145.92 : x
  2. Step 2: Convert to fraction form
    7,760.96/11,634.96 = 7,145.92/x
  3. Step 3: Cross multiply
    7,760.96x = 11,634.96 × 7,145.92
  4. Step 4: Simplify right side
    7,760.96x = 83,142,493.36
  5. Step 5: Solve for x
    x = 83,142,493.36/7,760.96
  6. Step 6: Final answer
    x = 10,712.91

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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.