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Finding the Fourth Proportional to 8,515.65, 12,754.02 and 5,045.61

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Solution

The fourth proportional to 8,515.65, 12,754.02 and 5,045.61 is: 7,556.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.65 : 12,754.02 = 5,045.61 : x
  2. Step 2: Convert to fraction form
    8,515.65/12,754.02 = 5,045.61/x
  3. Step 3: Cross multiply
    8,515.65x = 12,754.02 × 5,045.61
  4. Step 4: Simplify right side
    8,515.65x = 64,351,810.85
  5. Step 5: Solve for x
    x = 64,351,810.85/8,515.65
  6. Step 6: Final answer
    x = 7,556.89

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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.