Home / 2,609.12-3,914.64-1,222.91

Finding the Fourth Proportional to 2,609.12, 3,914.64 and 1,222.91

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Solution

The fourth proportional to 2,609.12, 3,914.64 and 1,222.91 is: 1,834.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.12 : 3,914.64 = 1,222.91 : x
  2. Step 2: Convert to fraction form
    2,609.12/3,914.64 = 1,222.91/x
  3. Step 3: Cross multiply
    2,609.12x = 3,914.64 × 1,222.91
  4. Step 4: Simplify right side
    2,609.12x = 4,787,226.71
  5. Step 5: Solve for x
    x = 4,787,226.71/2,609.12
  6. Step 6: Final answer
    x = 1,834.81

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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.