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Finding the Fourth Proportional to 7,950.75, 11,926.13 and 2,478.75

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Solution

The fourth proportional to 7,950.75, 11,926.13 and 2,478.75 is: 3,718.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,950.75 : 11,926.13 = 2,478.75 : x
  2. Step 2: Convert to fraction form
    7,950.75/11,926.13 = 2,478.75/x
  3. Step 3: Cross multiply
    7,950.75x = 11,926.13 × 2,478.75
  4. Step 4: Simplify right side
    7,950.75x = 29,561,882.34
  5. Step 5: Solve for x
    x = 29,561,882.34/7,950.75
  6. Step 6: Final answer
    x = 3,718.13

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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.