Home / 2,212.68-3,318.40-826.57

Finding the Fourth Proportional to 2,212.68, 3,318.40 and 826.57

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Solution

The fourth proportional to 2,212.68, 3,318.40 and 826.57 is: 1,239.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.68 : 3,318.40 = 826.57 : x
  2. Step 2: Convert to fraction form
    2,212.68/3,318.40 = 826.57/x
  3. Step 3: Cross multiply
    2,212.68x = 3,318.40 × 826.57
  4. Step 4: Simplify right side
    2,212.68x = 2,742,869.16
  5. Step 5: Solve for x
    x = 2,742,869.16/2,212.68
  6. Step 6: Final answer
    x = 1,239.61

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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.