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Finding the Fourth Proportional to 7,620.83, 11,429.83 and 3,459.83

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Solution

The fourth proportional to 7,620.83, 11,429.83 and 3,459.83 is: 5,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.83 : 11,429.83 = 3,459.83 : x
  2. Step 2: Convert to fraction form
    7,620.83/11,429.83 = 3,459.83/x
  3. Step 3: Cross multiply
    7,620.83x = 11,429.83 × 3,459.83
  4. Step 4: Simplify right side
    7,620.83x = 39,545,268.73
  5. Step 5: Solve for x
    x = 39,545,268.73/7,620.83
  6. Step 6: Final answer
    x = 5,189.10

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1.5x scale

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.