Home / 7,715.12-11,573.88-2,519.78

Finding the Fourth Proportional to 7,715.12, 11,573.88 and 2,519.78

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Solution

The fourth proportional to 7,715.12, 11,573.88 and 2,519.78 is: 3,780.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.12 : 11,573.88 = 2,519.78 : x
  2. Step 2: Convert to fraction form
    7,715.12/11,573.88 = 2,519.78/x
  3. Step 3: Cross multiply
    7,715.12x = 11,573.88 × 2,519.78
  4. Step 4: Simplify right side
    7,715.12x = 29,163,631.35
  5. Step 5: Solve for x
    x = 29,163,631.35/7,715.12
  6. Step 6: Final answer
    x = 3,780.06

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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.