Home / 3,189.09-4,400.91-1,772.78

Finding the Fourth Proportional to 3,189.09, 4,400.91 and 1,772.78

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Solution

The fourth proportional to 3,189.09, 4,400.91 and 1,772.78 is: 2,446.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.09 : 4,400.91 = 1,772.78 : x
  2. Step 2: Convert to fraction form
    3,189.09/4,400.91 = 1,772.78/x
  3. Step 3: Cross multiply
    3,189.09x = 4,400.91 × 1,772.78
  4. Step 4: Simplify right side
    3,189.09x = 7,801,823.23
  5. Step 5: Solve for x
    x = 7,801,823.23/3,189.09
  6. Step 6: Final answer
    x = 2,446.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.