Home / 3,221.07-4,832.45-912.57

Finding the Fourth Proportional to 3,221.07, 4,832.45 and 912.57

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Solution

The fourth proportional to 3,221.07, 4,832.45 and 912.57 is: 1,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.07 : 4,832.45 = 912.57 : x
  2. Step 2: Convert to fraction form
    3,221.07/4,832.45 = 912.57/x
  3. Step 3: Cross multiply
    3,221.07x = 4,832.45 × 912.57
  4. Step 4: Simplify right side
    3,221.07x = 4,409,944.33
  5. Step 5: Solve for x
    x = 4,409,944.33/3,221.07
  6. Step 6: Final answer
    x = 1,369.09

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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.