Home / 7,490.70-11,229.78-2,808.06

Finding the Fourth Proportional to 7,490.70, 11,229.78 and 2,808.06

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Solution

The fourth proportional to 7,490.70, 11,229.78 and 2,808.06 is: 4,209.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,490.70 : 11,229.78 = 2,808.06 : x
  2. Step 2: Convert to fraction form
    7,490.70/11,229.78 = 2,808.06/x
  3. Step 3: Cross multiply
    7,490.70x = 11,229.78 × 2,808.06
  4. Step 4: Simplify right side
    7,490.70x = 31,533,896.03
  5. Step 5: Solve for x
    x = 31,533,896.03/7,490.70
  6. Step 6: Final answer
    x = 4,209.74

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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.