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Finding the Fourth Proportional to 7,521.88, 11,277.90 and 7,108.84

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Solution

The fourth proportional to 7,521.88, 11,277.90 and 7,108.84 is: 10,658.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.88 : 11,277.90 = 7,108.84 : x
  2. Step 2: Convert to fraction form
    7,521.88/11,277.90 = 7,108.84/x
  3. Step 3: Cross multiply
    7,521.88x = 11,277.90 × 7,108.84
  4. Step 4: Simplify right side
    7,521.88x = 80,172,786.64
  5. Step 5: Solve for x
    x = 80,172,786.64/7,521.88
  6. Step 6: Final answer
    x = 10,658.61

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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.