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Finding the Fourth Proportional to 7,518.66, 11,287.10 and 3,519.87

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Solution

The fourth proportional to 7,518.66, 11,287.10 and 3,519.87 is: 5,284.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.66 : 11,287.10 = 3,519.87 : x
  2. Step 2: Convert to fraction form
    7,518.66/11,287.10 = 3,519.87/x
  3. Step 3: Cross multiply
    7,518.66x = 11,287.10 × 3,519.87
  4. Step 4: Simplify right side
    7,518.66x = 39,729,107.08
  5. Step 5: Solve for x
    x = 39,729,107.08/7,518.66
  6. Step 6: Final answer
    x = 5,284.07

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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.