Home / 3,189.54-4,390.65-2,767.41

Finding the Fourth Proportional to 3,189.54, 4,390.65 and 2,767.41

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Solution

The fourth proportional to 3,189.54, 4,390.65 and 2,767.41 is: 3,809.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.54 : 4,390.65 = 2,767.41 : x
  2. Step 2: Convert to fraction form
    3,189.54/4,390.65 = 2,767.41/x
  3. Step 3: Cross multiply
    3,189.54x = 4,390.65 × 2,767.41
  4. Step 4: Simplify right side
    3,189.54x = 12,150,728.72
  5. Step 5: Solve for x
    x = 12,150,728.72/3,189.54
  6. Step 6: Final answer
    x = 3,809.56

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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.