Home / 3,270.72-4,513.61-1,778.65

Finding the Fourth Proportional to 3,270.72, 4,513.61 and 1,778.65

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Solution

The fourth proportional to 3,270.72, 4,513.61 and 1,778.65 is: 2,454.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.72 : 4,513.61 = 1,778.65 : x
  2. Step 2: Convert to fraction form
    3,270.72/4,513.61 = 1,778.65/x
  3. Step 3: Cross multiply
    3,270.72x = 4,513.61 × 1,778.65
  4. Step 4: Simplify right side
    3,270.72x = 8,028,132.43
  5. Step 5: Solve for x
    x = 8,028,132.43/3,270.72
  6. Step 6: Final answer
    x = 2,454.55

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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.