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Finding the Fourth Proportional to 2,412.83, 3,620.39 and 854.01

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Solution

The fourth proportional to 2,412.83, 3,620.39 and 854.01 is: 1,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,412.83 : 3,620.39 = 854.01 : x
  2. Step 2: Convert to fraction form
    2,412.83/3,620.39 = 854.01/x
  3. Step 3: Cross multiply
    2,412.83x = 3,620.39 × 854.01
  4. Step 4: Simplify right side
    2,412.83x = 3,091,844.99
  5. Step 5: Solve for x
    x = 3,091,844.99/2,412.83
  6. Step 6: Final answer
    x = 1,281.42

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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.